38156720 has 80 divisors (see below), whose sum is σ = 103142208. Its totient is φ = 12856320.

The previous prime is 38156717. The next prime is 38156771. The reversal of 38156720 is 2765183.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×38156720³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33602 + ... + 34718.

Almost surely, 2^38156720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38156720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51571104).

38156720 is an abundant number, since it is smaller than the sum of its proper divisors (64985488).

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

38156720 is a wasteful number, since it uses less digits than its factorization.

38156720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 38156720 is about 6177.1125940847. The cubic root of 38156720 is about 336.6590898969.

The spelling of 38156720 in words is "thirty-eight million, one hundred fifty-six thousand, seven hundred twenty".