20751150 has 48 divisors (see below), whose sum is σ = 58817664. Its totient is φ = 4742880.

The previous prime is 20751149. The next prime is 20751179. The reversal of 20751150 is 5115702.

It is a super-2 number, since 2×20751150² = 861220452645000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8832 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (1225368).

Almost surely, 2^20751150 is an apocalyptic number.

20751150 is an abundant number, since it is smaller than the sum of its proper divisors (38066514).

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

20751150 is a wasteful number, since it uses less digits than its factorization.

20751150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19785 (or 19780 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 20751150 is about 4555.3430167222. The cubic root of 20751150 is about 274.7983094125.

Adding to 20751150 its reverse (5115702), we get a palindrome (25866852).

The spelling of 20751150 in words is "twenty million, seven hundred fifty-one thousand, one hundred fifty".