20388010 has 8 divisors (see below), whose sum is σ = 36698436. Its totient is φ = 8155200.

The previous prime is 20387993. The next prime is 20388013. The reversal of 20388010 is 1088302.

It can be written as a sum of positive squares in 2 ways, for example, as 19158129 + 1229881 = 4377^2 + 1109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20388013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019391 + ... + 1019410.

Almost surely, 2^20388010 is an apocalyptic number.

20388010 is a deficient number, since it is larger than the sum of its proper divisors (16310426).

20388010 is a wasteful number, since it uses less digits than its factorization.

20388010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038808.

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

The square root of 20388010 is about 4515.3084058567. The cubic root of 20388010 is about 273.1858994042.

The spelling of 20388010 in words is "twenty million, three hundred eighty-eight thousand, ten".