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38677620 = 2235897243
BaseRepresentation
bin1001001110001…
…0110001110100
32200210000201110
42103202301310
534400140440
63500555020
7646516512
oct223426164
980700643
1038677620
111a918083
1210b52a70
138022987
1451cb4b2
1535e0080
hex24e2c74

38677620 has 48 divisors (see below), whose sum is σ = 109529280. Its totient is φ = 10196736.

The previous prime is 38677603. The next prime is 38677621. The reversal of 38677620 is 2677683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38677621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719 + ... + 8961.

It is an arithmetic number, because the mean of its divisors is an integer number (2281860).

Almost surely, 238677620 is an apocalyptic number.

38677620 is a gapful number since it is divisible by the number (30) 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 38677620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54764640).

38677620 is an abundant number, since it is smaller than the sum of its proper divisors (70851660).

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

38677620 is a wasteful number, since it uses less digits than its factorization.

38677620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344 (or 7342 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 38677620 is about 6219.1333801423. The cubic root of 38677620 is about 338.1841485718.

The spelling of 38677620 in words is "thirty-eight million, six hundred seventy-seven thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 89 178 267 356 445 534 890 1068 1335 1780 2670 5340 7243 14486 21729 28972 36215 43458 72430 86916 108645 144860 217290 434580 644627 1289254 1933881 2578508 3223135 3867762 6446270 7735524 9669405 12892540 19338810 38677620