20591148 has 24 divisors (see below), whose sum is σ = 50872752. Its totient is φ = 6459904.

The previous prime is 20591147. The next prime is 20591149. The reversal of 20591148 is 84119502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20591147) and next prime (20591149).

It is not an unprimeable number, because it can be changed into a prime (20591147) 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, 50265 + ... + 50672.

It is an arithmetic number, because the mean of its divisors is an integer number (2119698).

Almost surely, 2^20591148 is an apocalyptic number.

It is an amenable number.

20591148 is an abundant number, since it is smaller than the sum of its proper divisors (30281604).

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

20591148 is a wasteful number, since it uses less digits than its factorization.

20591148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100961 (or 100959 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 20591148 is about 4537.7470180696. The cubic root of 20591148 is about 274.0902077463.

The spelling of 20591148 in words is "twenty million, five hundred ninety-one thousand, one hundred forty-eight".