45428320 has 96 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 15226368.

The previous prime is 45428309. The next prime is 45428329. The reversal of 45428320 is 2382454.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45428329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52209 + ... + 53071.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 2^45428320 is an apocalyptic number.

45428320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45428320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62705664).

45428320 is an abundant number, since it is smaller than the sum of its proper divisors (79983008).

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

45428320 is a wasteful number, since it uses less digits than its factorization.

45428320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 45428320 is about 6740.0534122513. The cubic root of 45428320 is about 356.8142788229.

The spelling of 45428320 in words is "forty-five million, four hundred twenty-eight thousand, three hundred twenty".