20253804 has 24 divisors (see below), whose sum is σ = 48265728. Its totient is φ = 6607440.

The previous prime is 20253799. The next prime is 20253811. The reversal of 20253804 is 40835202.

20253804 = T₃₆₇ + T₃₆₈ + ... + T₅₅₄.

It is a super-4 number, since 4×20253804⁴ (a number of 30 digits) contains 4444 as substring.

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 7 ways as a sum of consecutive naturals, for example, 17392 + ... + 18519.

It is an arithmetic number, because the mean of its divisors is an integer number (2011072).

Almost surely, 2^20253804 is an apocalyptic number.

It is an amenable number.

20253804 is an abundant number, since it is smaller than the sum of its proper divisors (28011924).

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

20253804 is a wasteful number, since it uses less digits than its factorization.

20253804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35965 (or 35963 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20253804 is about 4500.4226468189. The cubic root of 20253804 is about 272.5851553296.

The spelling of 20253804 in words is "twenty million, two hundred fifty-three thousand, eight hundred four".