10388020 has 24 divisors (see below), whose sum is σ = 23098824. Its totient is φ = 3910656.

The previous prime is 10387997. The next prime is 10388023. The reversal of 10388020 is 2088301.

It can be written as a sum of positive squares in 4 ways, for example, as 913936 + 9474084 = 956^2 + 3078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10387982 and 10388000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10388023) 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, 14937 + ... + 15616.

It is an arithmetic number, because the mean of its divisors is an integer number (962451).

Almost surely, 2^10388020 is an apocalyptic number.

10388020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10388020 is an abundant number, since it is smaller than the sum of its proper divisors (12710804).

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

10388020 is a wasteful number, since it uses less digits than its factorization.

10388020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579 (or 30577 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 10388020 is about 3223.0451439594. The cubic root of 10388020 is about 218.1947310329.

The spelling of 10388020 in words is "ten million, three hundred eighty-eight thousand, twenty".