20351148 has 12 divisors (see below), whose sum is σ = 47486040. Its totient is φ = 6783712.

The previous prime is 20351143. The next prime is 20351153. The reversal of 20351148 is 84115302.

It is an interprime number because it is at equal distance from previous prime (20351143) and next prime (20351153).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20351143) 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 3 ways as a sum of consecutive naturals, for example, 847953 + ... + 847976.

It is an arithmetic number, because the mean of its divisors is an integer number (3957170).

Almost surely, 2^20351148 is an apocalyptic number.

It is an amenable number.

20351148 is an abundant number, since it is smaller than the sum of its proper divisors (27134892).

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

20351148 is a wasteful number, since it uses less digits than its factorization.

20351148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695936 (or 1695934 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20351148 is about 4511.2246674268. The cubic root of 20351148 is about 273.0211579088.

The spelling of 20351148 in words is "twenty million, three hundred fifty-one thousand, one hundred forty-eight".