45332778 has 32 divisors (see below), whose sum is σ = 96477696. Its totient is φ = 14151168.

The previous prime is 45332753. The next prime is 45332801. The reversal of 45332778 is 87723354.

It is a super-2 number, since 2×45332778² = 4110121522394568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21750 + ... + 23742.

It is an arithmetic number, because the mean of its divisors is an integer number (3014928).

Almost surely, 2^45332778 is an apocalyptic number.

45332778 is an abundant number, since it is smaller than the sum of its proper divisors (51144918).

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

45332778 is a wasteful number, since it uses less digits than its factorization.

45332778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238.

The product of its digits is 141120, while the sum is 39.

The square root of 45332778 is about 6732.9620524699. The cubic root of 45332778 is about 356.5639601012.

The spelling of 45332778 in words is "forty-five million, three hundred thirty-two thousand, seven hundred seventy-eight".