20673522 has 16 divisors (see below), whose sum is σ = 45941280. Its totient is φ = 6891156.

The previous prime is 20673517. The next prime is 20673533. The reversal of 20673522 is 22537602.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191368 + ... + 191475.

It is an arithmetic number, because the mean of its divisors is an integer number (2871330).

Almost surely, 2^20673522 is an apocalyptic number.

20673522 is an abundant number, since it is smaller than the sum of its proper divisors (25267758).

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

20673522 is a wasteful number, since it uses less digits than its factorization.

20673522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382854 (or 382848 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20673522 is about 4546.8144892881. The cubic root of 20673522 is about 274.4552167977.

The spelling of 20673522 in words is "twenty million, six hundred seventy-three thousand, five hundred twenty-two".