20769330 has 32 divisors (see below), whose sum is σ = 50595264. Its totient is φ = 5455296.

The previous prime is 20769319. The next prime is 20769361. The reversal of 20769330 is 3396702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 3157 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (1581102).

Almost surely, 2^20769330 is an apocalyptic number.

20769330 is an abundant number, since it is smaller than the sum of its proper divisors (29825934).

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

20769330 is a wasteful number, since it uses less digits than its factorization.

20769330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 20769330 is about 4557.3380388117. The cubic root of 20769330 is about 274.8785358904.

The spelling of 20769330 in words is "twenty million, seven hundred sixty-nine thousand, three hundred thirty".