20158452 has 36 divisors (see below), whose sum is σ = 51147460. Its totient is φ = 6694272.

The previous prime is 20158433. The next prime is 20158477. The reversal of 20158452 is 25485102.

It is a happy number.

20158452 is a `hidden beast` number, since 201 + 5 + 8 + 452 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8503056 + 11655396 = 2916^2 + 3414^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10374 + ... + 12162.

Almost surely, 2^20158452 is an apocalyptic number.

It is an amenable number.

20158452 is an abundant number, since it is smaller than the sum of its proper divisors (30989008).

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

20158452 is a wasteful number, since it uses less digits than its factorization.

20158452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 20158452 is about 4489.8164773184. The cubic root of 20158452 is about 272.1567183655.

It can be divided in two parts, 201 and 58452, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 20158452 in words is "twenty million, one hundred fifty-eight thousand, four hundred fifty-two".