20447652 has 24 divisors (see below), whose sum is σ = 48186432. Its totient is φ = 6748000.

The previous prime is 20447587. The next prime is 20447653. The reversal of 20447652 is 25674402.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20447653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7224 + ... + 9647.

It is an arithmetic number, because the mean of its divisors is an integer number (2007768).

Almost surely, 2^20447652 is an apocalyptic number.

It is an amenable number.

20447652 is an abundant number, since it is smaller than the sum of its proper divisors (27738780).

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

20447652 is a wasteful number, since it uses less digits than its factorization.

20447652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16979 (or 16977 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 20447652 is about 4521.9080043716. The cubic root of 20447652 is about 273.4520278997.

The spelling of 20447652 in words is "twenty million, four hundred forty-seven thousand, six hundred fifty-two".