20769307 has 16 divisors (see below), whose sum is σ = 23436000. Its totient is φ = 18273024.

The previous prime is 20769293. The next prime is 20769311. The reversal of 20769307 is 70396702.

It is a cyclic number.

It is not a de Polignac number, because 20769307 - 2¹⁹ = 20245019 is a prime.

It is a super-2 number, since 2×20769307² = 862728226520498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20769317) 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, 33244 + ... + 33862.

It is an arithmetic number, because the mean of its divisors is an integer number (1464750).

Almost surely, 2^20769307 is an apocalyptic number.

20769307 is a deficient number, since it is larger than the sum of its proper divisors (2666693).

20769307 is a wasteful number, since it uses less digits than its factorization.

20769307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 20769307 is about 4557.3355154081. The cubic root of 20769307 is about 274.8784344233.

The spelling of 20769307 in words is "twenty million, seven hundred sixty-nine thousand, three hundred seven".