45947028 has 12 divisors (see below), whose sum is σ = 107209760. Its totient is φ = 15315672.

The previous prime is 45947023. The next prime is 45947047. The reversal of 45947028 is 82074954.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×45947028² = 4222258764065568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45947023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914448 + ... + 1914471.

Almost surely, 2^45947028 is an apocalyptic number.

It is an amenable number.

45947028 is an abundant number, since it is smaller than the sum of its proper divisors (61262732).

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

45947028 is a wasteful number, since it uses less digits than its factorization.

45947028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828926 (or 3828924 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 45947028 is about 6778.4237105687. The cubic root of 45947028 is about 358.1671971635.

The spelling of 45947028 in words is "forty-five million, nine hundred forty-seven thousand, twenty-eight".