45980840 has 16 divisors (see below), whose sum is σ = 103456980. Its totient is φ = 18392320.

The previous prime is 45980821. The next prime is 45980849. The reversal of 45980840 is 4808954.

It can be written as a sum of positive squares in 2 ways, for example, as 44649124 + 1331716 = 6682^2 + 1154^2 .

It is a super-2 number, since 2×45980840² = 4228475294211200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45980794 and 45980803.

It is not an unprimeable number, because it can be changed into a prime (45980849) 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, 574721 + ... + 574800.

Almost surely, 2^45980840 is an apocalyptic number.

45980840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45980840 is an abundant number, since it is smaller than the sum of its proper divisors (57476140).

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

45980840 is a wasteful number, since it uses less digits than its factorization.

45980840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149532 (or 1149528 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 45980840 is about 6780.9173420711. The cubic root of 45980840 is about 358.2550329487.

The spelling of 45980840 in words is "forty-five million, nine hundred eighty thousand, eight hundred forty".