20553652 has 24 divisors (see below), whose sum is σ = 41410880. Its totient is φ = 8743680.

The previous prime is 20553647. The next prime is 20553691. The reversal of 20553652 is 25635502.

It is a super-2 number, since 2×20553652² = 844905221074208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20553652.

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, 1252 + ... + 6532.

Almost surely, 2^20553652 is an apocalyptic number.

It is an amenable number.

20553652 is an abundant number, since it is smaller than the sum of its proper divisors (20857228).

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

20553652 is a wasteful number, since it uses less digits than its factorization.

20553652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 20553652 is about 4533.6135697697. The cubic root of 20553652 is about 273.9237360343.

The spelling of 20553652 in words is "twenty million, five hundred fifty-three thousand, six hundred fifty-two".