20398952 has 16 divisors (see below), whose sum is σ = 43712160. Its totient is φ = 8742384.

The previous prime is 20398921. The next prime is 20398967. The reversal of 20398952 is 25989302.

It is a super-2 number, since 2×20398952² = 832234485396608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182078 + ... + 182189.

It is an arithmetic number, because the mean of its divisors is an integer number (2732010).

Almost surely, 2^20398952 is an apocalyptic number.

It is an amenable number.

20398952 is an abundant number, since it is smaller than the sum of its proper divisors (23313208).

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

20398952 is a wasteful number, since it uses less digits than its factorization.

20398952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364280 (or 364276 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 20398952 is about 4516.5198992144. The cubic root of 20398952 is about 273.2347625271.

The spelling of 20398952 in words is "twenty million, three hundred ninety-eight thousand, nine hundred fifty-two".