720088138 has 16 divisors (see below), whose sum is σ = 1346658624. Its totient is φ = 280553760.

The previous prime is 720088111. The next prime is 720088139. The reversal of 720088138 is 831880027.

It is a junction number, because it is equal to n+sod(n) for n = 720088097 and 720088106.

It is not an unprimeable number, because it can be changed into a prime (720088139) 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, 2337795 + ... + 2338102.

It is an arithmetic number, because the mean of its divisors is an integer number (84166164).

Almost surely, 2^720088138 is an apocalyptic number.

720088138 is a deficient number, since it is larger than the sum of its proper divisors (626570486).

720088138 is a wasteful number, since it uses less digits than its factorization.

720088138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675917.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 720088138 is about 26834.4580344005. The cubic root of 720088138 is about 896.3175202314.

The spelling of 720088138 in words is "seven hundred twenty million, eighty-eight thousand, one hundred thirty-eight".