22997815 has 16 divisors (see below), whose sum is σ = 29730816. Its totient is φ = 17028000.

The previous prime is 22997803. The next prime is 22997851. The reversal of 22997815 is 51879922.

It is not a de Polignac number, because 22997815 - 2¹¹ = 22995767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (1858176).

Almost surely, 2^22997815 is an apocalyptic number.

22997815 is a deficient number, since it is larger than the sum of its proper divisors (6733001).

22997815 is a wasteful number, since it uses less digits than its factorization.

22997815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510.

The product of its digits is 90720, while the sum is 43.

The square root of 22997815 is about 4795.6037159048. The cubic root of 22997815 is about 284.3776921212.

The spelling of 22997815 in words is "twenty-two million, nine hundred ninety-seven thousand, eight hundred fifteen".