45031938 has 32 divisors (see below), whose sum is σ = 108349440. Its totient is φ = 12188880.

The previous prime is 45031937. The next prime is 45031939. The reversal of 45031938 is 83913054.

It is an interprime number because it is at equal distance from previous prime (45031937) and next prime (45031939).

It is a junction number, because it is equal to n+sod(n) for n = 45031899 and 45031908.

It is not an unprimeable number, because it can be changed into a prime (45031937) 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, 27418 + ... + 29013.

It is an arithmetic number, because the mean of its divisors is an integer number (3385920).

Almost surely, 2^45031938 is an apocalyptic number.

45031938 is an abundant number, since it is smaller than the sum of its proper divisors (63317502).

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

45031938 is a wasteful number, since it uses less digits than its factorization.

45031938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56462.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 45031938 is about 6710.5840282348. The cubic root of 45031938 is about 355.7734587406.

It can be divided in two parts, 4503 and 1938, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 45031938 in words is "forty-five million, thirty-one thousand, nine hundred thirty-eight".