20159460 has 36 divisors (see below), whose sum is σ = 61150908. Its totient is φ = 5375808.

The previous prime is 20159449. The next prime is 20159497. The reversal of 20159460 is 6495102.

It can be written as a sum of positive squares in 2 ways, for example, as 15069924 + 5089536 = 3882^2 + 2256^2 .

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

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, 55819 + ... + 56178.

Almost surely, 2^20159460 is an apocalyptic number.

20159460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20159460 is an abundant number, since it is smaller than the sum of its proper divisors (40991448).

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

20159460 is a wasteful number, since it uses less digits than its factorization.

20159460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112012 (or 112007 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20159460 is about 4489.9287299466. The cubic root of 20159460 is about 272.1612545835.

The spelling of 20159460 in words is "twenty million, one hundred fifty-nine thousand, four hundred sixty".