20754723 has 16 divisors (see below), whose sum is σ = 30425472. Its totient is φ = 12480000.

The previous prime is 20754719. The next prime is 20754737. The reversal of 20754723 is 32745702.

It is not a de Polignac number, because 20754723 - 2² = 20754719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20754623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (1901592).

Almost surely, 2^20754723 is an apocalyptic number.

20754723 is a deficient number, since it is larger than the sum of its proper divisors (9670749).

20754723 is a wasteful number, since it uses less digits than its factorization.

20754723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 20754723 is about 4555.7351766757. The cubic root of 20754723 is about 274.8140803940.

The spelling of 20754723 in words is "twenty million, seven hundred fifty-four thousand, seven hundred twenty-three".