38861520 has 40 divisors (see below), whose sum is σ = 120471456. Its totient is φ = 10363008.

The previous prime is 38861519. The next prime is 38861521. The reversal of 38861520 is 2516883.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38861519) and next prime (38861521).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38861521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80722 + ... + 81201.

Almost surely, 2^38861520 is an apocalyptic number.

38861520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38861520 is an abundant number, since it is smaller than the sum of its proper divisors (81609936).

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

38861520 is a wasteful number, since it uses less digits than its factorization.

38861520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161939 (or 161933 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 38861520 is about 6233.9008654293. The cubic root of 38861520 is about 338.7192879842.

The spelling of 38861520 in words is "thirty-eight million, eight hundred sixty-one thousand, five hundred twenty".