20159748 has 36 divisors (see below), whose sum is σ = 58240000. Its totient is φ = 5759856.

The previous prime is 20159747. The next prime is 20159749. The reversal of 20159748 is 84795102.

20159748 is a `hidden beast` number, since 20 + 1 + 597 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (20159747) and next prime (20159749).

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20159747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39748 + ... + 40251.

Almost surely, 2^20159748 is an apocalyptic number.

20159748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20159748 is an abundant number, since it is smaller than the sum of its proper divisors (38080252).

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

20159748 is a wasteful number, since it uses less digits than its factorization.

20159748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80016 (or 80011 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 20159748 is about 4489.9608016106. The cubic root of 20159748 is about 272.1625506181.

The spelling of 20159748 in words is "twenty million, one hundred fifty-nine thousand, seven hundred forty-eight".