20723794 has 48 divisors (see below), whose sum is σ = 40582080. Its totient is φ = 7750080.

The previous prime is 20723783. The next prime is 20723803. The reversal of 20723794 is 49732702.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 44724 + ... + 45184.

It is an arithmetic number, because the mean of its divisors is an integer number (845460).

Almost surely, 2^20723794 is an apocalyptic number.

20723794 is a deficient number, since it is larger than the sum of its proper divisors (19858286).

20723794 is a wasteful number, since it uses less digits than its factorization.

20723794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 20723794 is about 4552.3393985950. The cubic root of 20723794 is about 274.6775018374.

The spelling of 20723794 in words is "twenty million, seven hundred twenty-three thousand, seven hundred ninety-four".