45209328 has 20 divisors (see below), whose sum is σ = 116790888. Its totient is φ = 15069760.

The previous prime is 45209327. The next prime is 45209369. The reversal of 45209328 is 82390254.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45209323) 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, 470883 + ... + 470978.

Almost surely, 2^45209328 is an apocalyptic number.

45209328 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

45209328 is an abundant number, since it is smaller than the sum of its proper divisors (71581560).

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

45209328 is a wasteful number, since it uses less digits than its factorization.

45209328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941872 (or 941866 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 45209328 is about 6723.7882179617. The cubic root of 45209328 is about 356.2400014430.

The spelling of 45209328 in words is "forty-five million, two hundred nine thousand, three hundred twenty-eight".