20735901 has 6 divisors (see below), whose sum is σ = 29951870. Its totient is φ = 13823928.

The previous prime is 20735893. The next prime is 20735917. The reversal of 20735901 is 10953702.

20735901 is a `hidden beast` number, since 2 + 0 + 73 + 590 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 8415801 = 3510^2 + 2901^2 .

It is not a de Polignac number, because 20735901 - 2³ = 20735893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20735201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1151986 + ... + 1152003.

Almost surely, 2^20735901 is an apocalyptic number.

It is an amenable number.

20735901 is a deficient number, since it is larger than the sum of its proper divisors (9215969).

20735901 is a wasteful number, since it uses less digits than its factorization.

20735901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303995 (or 2303992 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 20735901 is about 4553.6689603000. The cubic root of 20735901 is about 274.7309809949.

The spelling of 20735901 in words is "twenty million, seven hundred thirty-five thousand, nine hundred one".