20158074 has 72 divisors (see below), whose sum is σ = 47878740. Its totient is φ = 6120576.

The previous prime is 20158067. The next prime is 20158079. The reversal of 20158074 is 47085102.

It can be written as a sum of positive squares in 2 ways, for example, as 20115225 + 42849 = 4485^2 + 207^2 .

It is not an unprimeable number, because it can be changed into a prime (20158079) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 276102 + ... + 276174.

Almost surely, 2^20158074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20158074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23939370).

20158074 is an abundant number, since it is smaller than the sum of its proper divisors (27720666).

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

20158074 is a wasteful number, since it uses less digits than its factorization.

20158074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20158074 is about 4489.7743818593. The cubic root of 20158074 is about 272.1550172448.

The spelling of 20158074 in words is "twenty million, one hundred fifty-eight thousand, seventy-four".