45687990 has 16 divisors (see below), whose sum is σ = 109651248. Its totient is φ = 12183456.

The previous prime is 45687979. The next prime is 45687997. The reversal of 45687990 is 9978654.

45687990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45687997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761437 + ... + 761496.

It is an arithmetic number, because the mean of its divisors is an integer number (6853203).

Almost surely, 2^45687990 is an apocalyptic number.

45687990 is an abundant number, since it is smaller than the sum of its proper divisors (63963258).

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

45687990 is a wasteful number, since it uses less digits than its factorization.

45687990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522943.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 45687990 is about 6759.2891638101. The cubic root of 45687990 is about 357.4928422125.

The spelling of 45687990 in words is "forty-five million, six hundred eighty-seven thousand, nine hundred ninety".