45140032 has 56 divisors (see below), whose sum is σ = 108411264. Its totient is φ = 18204672.

The previous prime is 45140027. The next prime is 45140033. The reversal of 45140032 is 23004154.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×45140032² = 4075244977922048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45139991 and 45140009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45140033) 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, 4653 + ... + 10579.

Almost surely, 2^45140032 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 45140032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54205632).

45140032 is an abundant number, since it is smaller than the sum of its proper divisors (63271232).

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

45140032 is a wasteful number, since it uses less digits than its factorization.

45140032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963 (or 5953 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 45140032 is about 6718.6331943335. The cubic root of 45140032 is about 356.0578957307.

Adding to 45140032 its reverse (23004154), we get a palindrome (68144186).

The spelling of 45140032 in words is "forty-five million, one hundred forty thousand, thirty-two".