20157246 has 48 divisors (see below), whose sum is σ = 45995040. Its totient is φ = 6367680.

The previous prime is 20157229. The next prime is 20157253. The reversal of 20157246 is 64275102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74800 + ... + 75068.

It is an arithmetic number, because the mean of its divisors is an integer number (958230).

Almost surely, 2^20157246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20157246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22997520).

20157246 is an abundant number, since it is smaller than the sum of its proper divisors (25837794).

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

20157246 is a wasteful number, since it uses less digits than its factorization.

20157246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20157246 is about 4489.6821713792. The cubic root of 20157246 is about 272.1512909060.

It can be divided in two parts, 2015 and 7246, that added together give a cube (9261 = 21³).

The spelling of 20157246 in words is "twenty million, one hundred fifty-seven thousand, two hundred forty-six".