45728431 has 8 divisors (see below), whose sum is σ = 52304000. Its totient is φ = 39163608.

The previous prime is 45728429. The next prime is 45728437. The reversal of 45728431 is 13482754.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45728431 - 2¹ = 45728429 is a prime.

It is a super-2 number, since 2×45728431² = 4182178803443522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45728437) 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, 11320 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (6538000).

Almost surely, 2^45728431 is an apocalyptic number.

45728431 is a deficient number, since it is larger than the sum of its proper divisors (6575569).

45728431 is a wasteful number, since it uses less digits than its factorization.

45728431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373.

The product of its digits is 26880, while the sum is 34.

The square root of 45728431 is about 6762.2800149062. The cubic root of 45728431 is about 357.5982900880.

The spelling of 45728431 in words is "forty-five million, seven hundred twenty-eight thousand, four hundred thirty-one".