20892330 has 40 divisors (see below), whose sum is σ = 56179332. Its totient is φ = 5571072.

The previous prime is 20892293. The next prime is 20892331. The reversal of 20892330 is 3329802.

It can be written as a sum of positive squares in 2 ways, for example, as 18740241 + 2152089 = 4329^2 + 1467^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20892294 and 20892303.

It is not an unprimeable number, because it can be changed into a prime (20892331) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12087 + ... + 13706.

Almost surely, 2^20892330 is an apocalyptic number.

20892330 is an abundant number, since it is smaller than the sum of its proper divisors (35287002).

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

20892330 is a wasteful number, since it uses less digits than its factorization.

20892330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812 (or 25803 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20892330 is about 4570.8128379972. The cubic root of 20892330 is about 275.4200962168.

The spelling of 20892330 in words is "twenty million, eight hundred ninety-two thousand, three hundred thirty".