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137752400 = 2452521661
BaseRepresentation
bin10000011010111…
…10111101010000
3100121012112202202
420031132331100
5240231034100
621400302332
73261606332
oct1015367520
9317175682
10137752400
1170837465
123a1719a8
13227012c6
141441b452
15c1607d5
hex835ef50

137752400 has 60 divisors (see below), whose sum is σ = 332087004. Its totient is φ = 54912000.

The previous prime is 137752397. The next prime is 137752421. The reversal of 137752400 is 4257731.

137752400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1236544 + 136515856 = 1112^2 + 11684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208070 + ... + 208730.

Almost surely, 2137752400 is an apocalyptic number.

137752400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137752400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166043502).

137752400 is an abundant number, since it is smaller than the sum of its proper divisors (194334604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137752400 is a wasteful number, since it uses less digits than its factorization.

137752400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 137752400 is about 11736.7968372976. The cubic root of 137752400 is about 516.4556798373.

The spelling of 137752400 in words is "one hundred thirty-seven million, seven hundred fifty-two thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 521 661 1042 1322 2084 2605 2644 3305 4168 5210 5288 6610 8336 10420 10576 13025 13220 16525 20840 26050 26440 33050 41680 52100 52880 66100 104200 132200 208400 264400 344381 688762 1377524 1721905 2755048 3443810 5510096 6887620 8609525 13775240 17219050 27550480 34438100 68876200 137752400