20835330 has 16 divisors (see below), whose sum is σ = 50004864. Its totient is φ = 5556080.

The previous prime is 20835301. The next prime is 20835337. The reversal of 20835330 is 3353802.

It is a super-2 number, since 2×20835330² = 868221952417800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20835330.

It is not an unprimeable number, because it can be changed into a prime (20835337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347226 + ... + 347285.

It is an arithmetic number, because the mean of its divisors is an integer number (3125304).

Almost surely, 2^20835330 is an apocalyptic number.

20835330 is an abundant number, since it is smaller than the sum of its proper divisors (29169534).

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

20835330 is a wasteful number, since it uses less digits than its factorization.

20835330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694521.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20835330 is about 4564.5733645106. The cubic root of 20835330 is about 275.1693942578.

The spelling of 20835330 in words is "twenty million, eight hundred thirty-five thousand, three hundred thirty".