20304133402 has 32 divisors (see below), whose sum is σ = 35054870400. Its totient is φ = 8640036288.

The previous prime is 20304133393. The next prime is 20304133403. The reversal of 20304133402 is 20433140302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20304133403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187349 + ... + 1204327.

It is an arithmetic number, because the mean of its divisors is an integer number (1095464700).

Almost surely, 2^20304133402 is an apocalyptic number.

20304133402 is a deficient number, since it is larger than the sum of its proper divisors (14750736998).

20304133402 is a wasteful number, since it uses less digits than its factorization.

20304133402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17590.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20304133402 its reverse (20433140302), we get a palindrome (40737273704).

The spelling of 20304133402 in words is "twenty billion, three hundred four million, one hundred thirty-three thousand, four hundred two".