20754734 has 48 divisors (see below), whose sum is σ = 42574896. Its totient is φ = 7459200.

The previous prime is 20754719. The next prime is 20754737. The reversal of 20754734 is 43745702.

It is a self number, because there is not a number n which added to its sum of digits gives 20754734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13274 + ... + 14754.

It is an arithmetic number, because the mean of its divisors is an integer number (886977).

Almost surely, 2^20754734 is an apocalyptic number.

20754734 is an abundant number, since it is smaller than the sum of its proper divisors (21820162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20754734 is a wasteful number, since it uses less digits than its factorization.

20754734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 20754734 is about 4555.7363839450. The cubic root of 20754734 is about 274.8141289445.

The spelling of 20754734 in words is "twenty million, seven hundred fifty-four thousand, seven hundred thirty-four".