22305807 has 16 divisors (see below), whose sum is σ = 33501280. Its totient is φ = 14665536.

The previous prime is 22305793. The next prime is 22305817. The reversal of 22305807 is 70850322.

It is not a de Polignac number, because 22305807 - 2⁶ = 22305743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22305817) 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, 3688 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (2093830).

Almost surely, 2^22305807 is an apocalyptic number.

22305807 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22305807 is a deficient number, since it is larger than the sum of its proper divisors (11195473).

22305807 is a wasteful number, since it uses less digits than its factorization.

22305807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399 (or 11393 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22305807 is about 4722.9023915385. The cubic root of 22305807 is about 281.4962714051.

The spelling of 22305807 in words is "twenty-two million, three hundred five thousand, eight hundred seven".