45678020 has 24 divisors (see below), whose sum is σ = 97498968. Its totient is φ = 17971200.

The previous prime is 45678013. The next prime is 45678029. The reversal of 45678020 is 2087654.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 45616516 = 248^2 + 6754^2 .

It is a super-2 number, since 2×45678020² = 4172963022240800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45678029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17501 + ... + 19940.

It is an arithmetic number, because the mean of its divisors is an integer number (4062457).

Almost surely, 2^45678020 is an apocalyptic number.

It is an amenable number.

45678020 is an abundant number, since it is smaller than the sum of its proper divisors (51820948).

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

45678020 is a wasteful number, since it uses less digits than its factorization.

45678020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37511 (or 37509 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 45678020 is about 6758.5516199849. The cubic root of 45678020 is about 357.4668363779.

The spelling of 45678020 in words is "forty-five million, six hundred seventy-eight thousand, twenty".