20659452 has 24 divisors (see below), whose sum is σ = 52588032. Its totient is φ = 6260400.

The previous prime is 20659427. The next prime is 20659493. The reversal of 20659452 is 25495602.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78124 + ... + 78387.

It is an arithmetic number, because the mean of its divisors is an integer number (2191168).

Almost surely, 2^20659452 is an apocalyptic number.

20659452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20659452 is an abundant number, since it is smaller than the sum of its proper divisors (31928580).

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

20659452 is a wasteful number, since it uses less digits than its factorization.

20659452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156529 (or 156527 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 20659452 is about 4545.2669888578. The cubic root of 20659452 is about 274.3929396932.

The spelling of 20659452 in words is "twenty million, six hundred fifty-nine thousand, four hundred fifty-two".