20258112 has 56 divisors (see below), whose sum is σ = 61260736. Its totient is φ = 5787648.

The previous prime is 20258111. The next prime is 20258113. The reversal of 20258112 is 21185202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20258111) and next prime (20258113).

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×20258112² = 820782203609088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20258111) 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, 6193 + ... + 8880.

Almost surely, 2^20258112 is an apocalyptic number.

It is an amenable number.

20258112 is an abundant number, since it is smaller than the sum of its proper divisors (41002624).

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

20258112 is a wasteful number, since it uses less digits than its factorization.

20258112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095 (or 15085 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 20258112 is about 4500.9012430845. The cubic root of 20258112 is about 272.6044803183.

The spelling of 20258112 in words is "twenty million, two hundred fifty-eight thousand, one hundred twelve".