45218280 has 32 divisors (see below), whose sum is σ = 135655200. Its totient is φ = 12058176.

The previous prime is 45218273. The next prime is 45218281. The reversal of 45218280 is 8281254.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (45218281) 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, 188290 + ... + 188529.

It is an arithmetic number, because the mean of its divisors is an integer number (4239225).

Almost surely, 2^45218280 is an apocalyptic number.

45218280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45218280 is an abundant number, since it is smaller than the sum of its proper divisors (90436920).

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

45218280 is a wasteful number, since it uses less digits than its factorization.

45218280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376833 (or 376829 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 45218280 is about 6724.4538811713. The cubic root of 45218280 is about 356.2635131839.

The spelling of 45218280 in words is "forty-five million, two hundred eighteen thousand, two hundred eighty".