20404682 has 8 divisors (see below), whose sum is σ = 31184676. Its totient is φ = 10009792.

The previous prime is 20404679. The next prime is 20404697. The reversal of 20404682 is 28640402.

It can be written as a sum of positive squares in 2 ways, for example, as 17380561 + 3024121 = 4169^2 + 1739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20404682² = 832702095042248, which contains 22 as substring.

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, 96143 + ... + 96354.

Almost surely, 2^20404682 is an apocalyptic number.

20404682 is a deficient number, since it is larger than the sum of its proper divisors (10779994).

20404682 is a wasteful number, since it uses less digits than its factorization.

20404682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192552.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 20404682 is about 4517.1541926306. The cubic root of 20404682 is about 273.2603437207.

The spelling of 20404682 in words is "twenty million, four hundred four thousand, six hundred eighty-two".