20210400304 has 20 divisors (see below), whose sum is σ = 39183274600. Its totient is φ = 10098587520.

The previous prime is 20210400293. The next prime is 20210400323. The reversal of 20210400304 is 40300401202.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388029 + ... + 437020.

It is an arithmetic number, because the mean of its divisors is an integer number (1959163730).

Almost surely, 2^20210400304 is an apocalyptic number.

It is an amenable number.

20210400304 is a deficient number, since it is larger than the sum of its proper divisors (18972874296).

20210400304 is a wasteful number, since it uses less digits than its factorization.

20210400304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826588 (or 826582 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20210400304 its reverse (40300401202), we get a palindrome (60510801506).

The spelling of 20210400304 in words is "twenty billion, two hundred ten million, four hundred thousand, three hundred four".