20474152 has 8 divisors (see below), whose sum is σ = 38389050. Its totient is φ = 10237072.

The previous prime is 20474143. The next prime is 20474161. The reversal of 20474152 is 25147402.

It is an interprime number because it is at equal distance from previous prime (20474143) and next prime (20474161).

It can be written as a sum of positive squares in only one way, i.e., 17255716 + 3218436 = 4154^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279627 + ... + 1279642.

Almost surely, 2^20474152 is an apocalyptic number.

It is an amenable number.

20474152 is a deficient number, since it is larger than the sum of its proper divisors (17914898).

20474152 is a wasteful number, since it uses less digits than its factorization.

20474152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559275 (or 2559271 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 20474152 is about 4524.8372346417. The cubic root of 20474152 is about 273.5701074805.

The spelling of 20474152 in words is "twenty million, four hundred seventy-four thousand, one hundred fifty-two".