20734408 has 16 divisors (see below), whose sum is σ = 40567680. Its totient is φ = 9916368.

The previous prime is 20734403. The next prime is 20734411. The reversal of 20734408 is 80443702.

It is a super-2 number, since 2×20734408² = 859831350220928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20734403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56160 + ... + 56527.

It is an arithmetic number, because the mean of its divisors is an integer number (2535480).

Almost surely, 2^20734408 is an apocalyptic number.

It is an amenable number.

20734408 is a deficient number, since it is larger than the sum of its proper divisors (19833272).

20734408 is a wasteful number, since it uses less digits than its factorization.

20734408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112716 (or 112712 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20734408 is about 4553.5050236054. The cubic root of 20734408 is about 274.7243872262.

The spelling of 20734408 in words is "twenty million, seven hundred thirty-four thousand, four hundred eight".