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137251408 = 2471225459
BaseRepresentation
bin10000010111001…
…00101001010000
3100120021002112111
420023210221100
5240114021113
621341435104
73254421610
oct1013445120
9316232474
10137251408
1170525018
1239b6ba94
1322587268
141432aa40
15c0b213d
hex82e4a50

137251408 has 20 divisors (see below), whose sum is σ = 303914080. Its totient is φ = 58821984.

The previous prime is 137251391. The next prime is 137251409. The reversal of 137251408 is 804152731.

It is a self number, because there is not a number n which added to its sum of digits gives 137251408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137251409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612618 + ... + 612841.

It is an arithmetic number, because the mean of its divisors is an integer number (15195704).

Almost surely, 2137251408 is an apocalyptic number.

It is an amenable number.

137251408 is an abundant number, since it is smaller than the sum of its proper divisors (166662672).

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

137251408 is a wasteful number, since it uses less digits than its factorization.

137251408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225474 (or 1225468 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 137251408 is about 11715.4346056815. The cubic root of 137251408 is about 515.8288196879.

The spelling of 137251408 in words is "one hundred thirty-seven million, two hundred fifty-one thousand, four hundred eight".