45281812 has 48 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 20572160.

The previous prime is 45281801. The next prime is 45281813. The reversal of 45281812 is 21818254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45281813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400668 + ... + 400780.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^45281812 is an apocalyptic number.

It is an amenable number.

45281812 is a deficient number, since it is larger than the sum of its proper divisors (41591660).

45281812 is a wasteful number, since it uses less digits than its factorization.

45281812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 286 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 45281812 is about 6729.1761754319. The cubic root of 45281812 is about 356.4302860128.

The spelling of 45281812 in words is "forty-five million, two hundred eighty-one thousand, eight hundred twelve".