38940516 has 18 divisors (see below), whose sum is σ = 98433062. Its totient is φ = 12980160.

The previous prime is 38940511. The next prime is 38940527. The reversal of 38940516 is 61504983.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 2916 = 6240^2 + 54^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1081681 = 38940516 / (3 + 8 + 9 + 4 + 0 + 5 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (38940511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540805 + ... + 540876.

Almost surely, 2^38940516 is an apocalyptic number.

38940516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38940516 is an abundant number, since it is smaller than the sum of its proper divisors (59492546).

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

38940516 is a wasteful number, since it uses less digits than its factorization.

38940516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081691 (or 1081686 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 38940516 is about 6240.2336494718. The cubic root of 38940516 is about 338.9486439028.

The spelling of 38940516 in words is "thirty-eight million, nine hundred forty thousand, five hundred sixteen".