45724572 has 72 divisors (see below), whose sum is σ = 118949376. Its totient is φ = 14805504.

The previous prime is 45724571. The next prime is 45724573. The reversal of 45724572 is 27542754.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45724571) and next prime (45724573).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45724571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333688 + ... + 333824.

Almost surely, 2^45724572 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 45724572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59474688).

45724572 is an abundant number, since it is smaller than the sum of its proper divisors (73224804).

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

45724572 is a wasteful number, since it uses less digits than its factorization.

45724572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 342 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 45724572 is about 6761.9946761292. The cubic root of 45724572 is about 357.5882306233.

The spelling of 45724572 in words is "forty-five million, seven hundred twenty-four thousand, five hundred seventy-two".