45018732 has 48 divisors (see below), whose sum is σ = 116492544. Its totient is φ = 13416000.

The previous prime is 45018731. The next prime is 45018769. The reversal of 45018732 is 23781054.

It is a self number, because there is not a number n which added to its sum of digits gives 45018732.

It is not an unprimeable number, because it can be changed into a prime (45018731) 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, 5257 + ... + 10847.

It is an arithmetic number, because the mean of its divisors is an integer number (2426928).

Almost surely, 2^45018732 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 45018732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58246272).

45018732 is an abundant number, since it is smaller than the sum of its proper divisors (71473812).

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

45018732 is a wasteful number, since it uses less digits than its factorization.

45018732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670 (or 5668 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 45018732 is about 6709.5999880768. The cubic root of 45018732 is about 355.7386774731.

Adding to 45018732 its reverse (23781054), we get a palindrome (68799786).

The spelling of 45018732 in words is "forty-five million, eighteen thousand, seven hundred thirty-two".