45478620 has 144 divisors (see below), whose sum is σ = 152635392. Its totient is φ = 10869120.

The previous prime is 45478619. The next prime is 45478639. The reversal of 45478620 is 2687454.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203829 + ... + 204051.

It is an arithmetic number, because the mean of its divisors is an integer number (1059968).

Almost surely, 2^45478620 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 45478620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76317696).

45478620 is an abundant number, since it is smaller than the sum of its proper divisors (107156772).

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

45478620 is a wasteful number, since it uses less digits than its factorization.

45478620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 45478620 is about 6743.7838043638. The cubic root of 45478620 is about 356.9459231228.

The spelling of 45478620 in words is "forty-five million, four hundred seventy-eight thousand, six hundred twenty".