45612820 has 24 divisors (see below), whose sum is σ = 104495328. Its totient is φ = 16586400.

The previous prime is 45612799. The next prime is 45612821. The reversal of 45612820 is 2821654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45612821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103446 + ... + 103885.

It is an arithmetic number, because the mean of its divisors is an integer number (4353972).

Almost surely, 2^45612820 is an apocalyptic number.

It is an amenable number.

45612820 is an abundant number, since it is smaller than the sum of its proper divisors (58882508).

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

45612820 is a wasteful number, since it uses less digits than its factorization.

45612820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207351 (or 207349 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 45612820 is about 6753.7263788223. The cubic root of 45612820 is about 357.2966747714.

It can be divided in two parts, 4561 and 2820, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 45612820 in words is "forty-five million, six hundred twelve thousand, eight hundred twenty".