20258958 has 16 divisors (see below), whose sum is σ = 40890960. Its totient is φ = 6690816.

The previous prime is 20258947. The next prime is 20258969. The reversal of 20258958 is 85985202.

It is an interprime number because it is at equal distance from previous prime (20258947) and next prime (20258969).

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, 14835 + ... + 16142.

It is an arithmetic number, because the mean of its divisors is an integer number (2555685).

Almost surely, 2^20258958 is an apocalyptic number.

20258958 is an abundant number, since it is smaller than the sum of its proper divisors (20632002).

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

20258958 is a wasteful number, since it uses less digits than its factorization.

20258958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31091.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 20258958 is about 4500.9952232812. The cubic root of 20258958 is about 272.6082750152.

The spelling of 20258958 in words is "twenty million, two hundred fifty-eight thousand, nine hundred fifty-eight".