20969330 has 64 divisors (see below), whose sum is σ = 43296768. Its totient is φ = 7265280.

The previous prime is 20969329. The next prime is 20969339. The reversal of 20969330 is 3396902.

It is not an unprimeable number, because it can be changed into a prime (20969339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121124 + ... + 121296.

It is an arithmetic number, because the mean of its divisors is an integer number (676512).

Almost surely, 2^20969330 is an apocalyptic number.

20969330 is an abundant number, since it is smaller than the sum of its proper divisors (22327438).

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

20969330 is a wasteful number, since it uses less digits than its factorization.

20969330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 20969330 is about 4579.2281008921. The cubic root of 20969330 is about 275.7580407631.

The spelling of 20969330 in words is "twenty million, nine hundred sixty-nine thousand, three hundred thirty".