20954736 has 60 divisors (see below), whose sum is σ = 63980280. Its totient is φ = 6349440.

The previous prime is 20954711. The next prime is 20954737. The reversal of 20954736 is 63745902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20954736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20954737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5031 + ... + 8198.

It is an arithmetic number, because the mean of its divisors is an integer number (1066338).

Almost surely, 2^20954736 is an apocalyptic number.

It is an amenable number.

20954736 is an abundant number, since it is smaller than the sum of its proper divisors (43025544).

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

20954736 is a wasteful number, since it uses less digits than its factorization.

20954736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13254 (or 13245 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 20954736 is about 4577.6343235344. The cubic root of 20954736 is about 275.6940529162.

It can be divided in two parts, 209 and 54736, that added together give a palindrome (54945).

The spelling of 20954736 in words is "twenty million, nine hundred fifty-four thousand, seven hundred thirty-six".