20120304 has 40 divisors (see below), whose sum is σ = 53386960. Its totient is φ = 6524928.

The previous prime is 20120281. The next prime is 20120323. The reversal of 20120304 is 40302102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20120304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3889 + ... + 7440.

It is an arithmetic number, because the mean of its divisors is an integer number (1334674).

Almost surely, 2^20120304 is an apocalyptic number.

20120304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20120304 is an abundant number, since it is smaller than the sum of its proper divisors (33266656).

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

20120304 is a wasteful number, since it uses less digits than its factorization.

20120304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11377 (or 11371 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20120304 is about 4485.5661849983. The cubic root of 20120304 is about 271.9849328447.

Adding to 20120304 its reverse (40302102), we get a palindrome (60422406).

The spelling of 20120304 in words is "twenty million, one hundred twenty thousand, three hundred four".