20153704 has 48 divisors (see below), whose sum is σ = 41997600. Its totient is φ = 9047808.

The previous prime is 20153677. The next prime is 20153723. The reversal of 20153704 is 40735102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52987 + ... + 53365.

It is an arithmetic number, because the mean of its divisors is an integer number (874950).

Almost surely, 2^20153704 is an apocalyptic number.

It is an amenable number.

20153704 is an abundant number, since it is smaller than the sum of its proper divisors (21843896).

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

20153704 is a wasteful number, since it uses less digits than its factorization.

20153704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20153704 is about 4489.2876940557. The cubic root of 20153704 is about 272.1353493046.

Adding to 20153704 its reverse (40735102), we get a palindrome (60888806).

The spelling of 20153704 in words is "twenty million, one hundred fifty-three thousand, seven hundred four".