45240732 has 18 divisors (see below), whose sum is σ = 114358608. Its totient is φ = 15080232.

The previous prime is 45240731. The next prime is 45240763. The reversal of 45240732 is 23704254.

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

It is a junction number, because it is equal to n+sod(n) for n = 45240696 and 45240705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45240731) 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, 628308 + ... + 628379.

It is an arithmetic number, because the mean of its divisors is an integer number (6353256).

Almost surely, 2^45240732 is an apocalyptic number.

It is an amenable number.

45240732 is an abundant number, since it is smaller than the sum of its proper divisors (69117876).

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

45240732 is a wasteful number, since it uses less digits than its factorization.

45240732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256697 (or 1256692 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 45240732 is about 6726.1231032445. The cubic root of 45240732 is about 356.3224679908.

Adding to 45240732 its reverse (23704254), we get a palindrome (68944986).

The spelling of 45240732 in words is "forty-five million, two hundred forty thousand, seven hundred thirty-two".