20826330 has 32 divisors (see below), whose sum is σ = 57124224. Its totient is φ = 4760256.

The previous prime is 20826271. The next prime is 20826331. The reversal of 20826330 is 3362802.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20826330.

It is not an unprimeable number, because it can be changed into a prime (20826331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49377 + ... + 49796.

It is an arithmetic number, because the mean of its divisors is an integer number (1785132).

Almost surely, 2^20826330 is an apocalyptic number.

20826330 is an abundant number, since it is smaller than the sum of its proper divisors (36297894).

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

20826330 is a wasteful number, since it uses less digits than its factorization.

20826330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99190.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20826330 is about 4563.5874046631. The cubic root of 20826330 is about 275.1297679561.

The spelling of 20826330 in words is "twenty million, eight hundred twenty-six thousand, three hundred thirty".