20155148 has 24 divisors (see below), whose sum is σ = 38128272. Its totient is φ = 9267264.

The previous prime is 20155147. The next prime is 20155159. The reversal of 20155148 is 84155102.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20155147) 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 7 ways as a sum of consecutive naturals, for example, 17486 + ... + 18602.

It is an arithmetic number, because the mean of its divisors is an integer number (1588678).

Almost surely, 2^20155148 is an apocalyptic number.

It is an amenable number.

20155148 is a deficient number, since it is larger than the sum of its proper divisors (17973124).

20155148 is a wasteful number, since it uses less digits than its factorization.

20155148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 20155148 is about 4489.4485184708. The cubic root of 20155148 is about 272.1418485906.

The spelling of 20155148 in words is "twenty million, one hundred fifty-five thousand, one hundred forty-eight".