623120728490 has 128 divisors (see below), whose sum is σ = 1256251997952. Its totient is φ = 221037465600.

The previous prime is 623120728487. The next prime is 623120728507. The reversal of 623120728490 is 94827021326.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 153816965 + ... + 153821015.

It is an arithmetic number, because the mean of its divisors is an integer number (9814468734).

Almost surely, 2^623120728490 is an apocalyptic number.

623120728490 is an abundant number, since it is smaller than the sum of its proper divisors (633131269462).

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

623120728490 is a wasteful number, since it uses less digits than its factorization.

623120728490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 623120728490 in words is "six hundred twenty-three billion, one hundred twenty million, seven hundred twenty-eight thousand, four hundred ninety".