20306901 has 8 divisors (see below), whose sum is σ = 27189184. Its totient is φ = 13481280.

The previous prime is 20306887. The next prime is 20306903. The reversal of 20306901 is 10960302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20306901 - 2⁶ = 20306837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306903) 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, 13321 + ... + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (3398648).

Almost surely, 2^20306901 is an apocalyptic number.

It is an amenable number.

20306901 is a deficient number, since it is larger than the sum of its proper divisors (6882283).

20306901 is a wasteful number, since it uses less digits than its factorization.

20306901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28331.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20306901 is about 4506.3178982402. The cubic root of 20306901 is about 272.8231488871.

The spelling of 20306901 in words is "twenty million, three hundred six thousand, nine hundred one".