720502090 has 32 divisors (see below), whose sum is σ = 1616920704. Its totient is φ = 224571840.

The previous prime is 720502051. The next prime is 720502127. The reversal of 720502090 is 90205027.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467089 + ... + 468628.

It is an arithmetic number, because the mean of its divisors is an integer number (50528772).

Almost surely, 2^720502090 is an apocalyptic number.

720502090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

720502090 is an abundant number, since it is smaller than the sum of its proper divisors (896418614).

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

720502090 is a wasteful number, since it uses less digits than its factorization.

720502090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935742.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 720502090 is about 26842.1699942460. The cubic root of 720502090 is about 896.4892405786.

The spelling of 720502090 in words is "seven hundred twenty million, five hundred two thousand, ninety".