20002723436 has 24 divisors (see below), whose sum is σ = 36223939920. Its totient is φ = 9653257152.

The previous prime is 20002723427. The next prime is 20002723441. The reversal of 20002723436 is 63432720002.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 20002723399 and 20002723408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339650 + ... + 394166.

It is an arithmetic number, because the mean of its divisors is an integer number (1509330830).

Almost surely, 2^20002723436 is an apocalyptic number.

It is an amenable number.

20002723436 is a deficient number, since it is larger than the sum of its proper divisors (16221216484).

20002723436 is a wasteful number, since it uses less digits than its factorization.

20002723436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57713 (or 57711 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The spelling of 20002723436 in words is "twenty billion, two million, seven hundred twenty-three thousand, four hundred thirty-six".