22273915 has 4 divisors (see below), whose sum is σ = 26728704. Its totient is φ = 17819128.

The previous prime is 22273897. The next prime is 22273973. The reversal of 22273915 is 51937222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22273915 - 2⁵ = 22273883 is a prime.

It is a super-2 number, since 2×22273915² = 992254578854450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2227387 + ... + 2227396.

It is an arithmetic number, because the mean of its divisors is an integer number (6682176).

Almost surely, 2^22273915 is an apocalyptic number.

22273915 is a deficient number, since it is larger than the sum of its proper divisors (4454789).

22273915 is an equidigital number, since it uses as much as digits as its factorization.

22273915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4454788.

The product of its digits is 7560, while the sum is 31.

The square root of 22273915 is about 4719.5248701538. The cubic root of 22273915 is about 281.3620498391.

The spelling of 22273915 in words is "twenty-two million, two hundred seventy-three thousand, nine hundred fifteen".