20023607734 has 24 divisors (see below), whose sum is σ = 32532795720. Its totient is φ = 9239038848.

The previous prime is 20023607717. The next prime is 20023607753. The reversal of 20023607734 is 43770632002.

It is a happy number.

It is a super-2 number, since 2×20023607734² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20023607734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1687129 + ... + 1698955.

It is an arithmetic number, because the mean of its divisors is an integer number (1355533155).

Almost surely, 2^20023607734 is an apocalyptic number.

20023607734 is a deficient number, since it is larger than the sum of its proper divisors (12509187986).

20023607734 is a wasteful number, since it uses less digits than its factorization.

20023607734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16864 (or 16851 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The spelling of 20023607734 in words is "twenty billion, twenty-three million, six hundred seven thousand, seven hundred thirty-four".