45239472 has 100 divisors (see below), whose sum is σ = 133145496. Its totient is φ = 14826240.

The previous prime is 45239461. The next prime is 45239473. The reversal of 45239472 is 27493254.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (45239473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86572 + ... + 87092.

Almost surely, 2^45239472 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 45239472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66572748).

45239472 is an abundant number, since it is smaller than the sum of its proper divisors (87906024).

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

45239472 is a wasteful number, since it uses less digits than its factorization.

45239472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 593 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 45239472 is about 6726.0294379374. The cubic root of 45239472 is about 356.3191599801.

The spelling of 45239472 in words is "forty-five million, two hundred thirty-nine thousand, four hundred seventy-two".