10720388 has 12 divisors (see below), whose sum is σ = 21440832. Its totient is φ = 4594440.

The previous prime is 10720357. The next prime is 10720399. The reversal of 10720388 is 88302701.

10720388 is an admirable number.

It is a super-2 number, since 2×10720388² = 229853437741088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10720388.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191408 + ... + 191463.

It is an arithmetic number, because the mean of its divisors is an integer number (1786736).

Almost surely, 2^10720388 is an apocalyptic number.

It is an amenable number.

10720388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10720388 is a wasteful number, since it uses less digits than its factorization.

10720388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382882 (or 382880 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 10720388 is about 3274.2003603934. The cubic root of 10720388 is about 220.4974144558.

The spelling of 10720388 in words is "ten million, seven hundred twenty thousand, three hundred eighty-eight".