20280404462 has 4 divisors (see below), whose sum is σ = 30420606696. Its totient is φ = 10140202230.

The previous prime is 20280404437. The next prime is 20280404483. The reversal of 20280404462 is 26440408202.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20280404462² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5070101114 + ... + 5070101117.

It is an arithmetic number, because the mean of its divisors is an integer number (7605151674).

Almost surely, 2^20280404462 is an apocalyptic number.

20280404462 is a deficient number, since it is larger than the sum of its proper divisors (10140202234).

20280404462 is a wasteful number, since it uses less digits than its factorization.

20280404462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140202233.

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 20280404462 in words is "twenty billion, two hundred eighty million, four hundred four thousand, four hundred sixty-two".