20495732 has 6 divisors (see below), whose sum is σ = 35867538. Its totient is φ = 10247864.

The previous prime is 20495731. The next prime is 20495749. The reversal of 20495732 is 23759402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 5410276 = 3884^2 + 2326^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20495731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561963 + ... + 2561970.

It is an arithmetic number, because the mean of its divisors is an integer number (5977923).

Almost surely, 2^20495732 is an apocalyptic number.

It is an amenable number.

20495732 is a deficient number, since it is larger than the sum of its proper divisors (15371806).

20495732 is a wasteful number, since it uses less digits than its factorization.

20495732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123937 (or 5123935 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20495732 is about 4527.2212227811. The cubic root of 20495732 is about 273.6661891149. Note that the first 3 decimals are identical.

The spelling of 20495732 in words is "twenty million, four hundred ninety-five thousand, seven hundred thirty-two".