26222015 has 12 divisors (see below), whose sum is σ = 32088504. Its totient is φ = 20570784.

The previous prime is 26221999. The next prime is 26222039. The reversal of 26222015 is 51022262.

It is not a de Polignac number, because 26222015 - 2⁴ = 26221999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13112 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (2674042).

Almost surely, 2^26222015 is an apocalyptic number.

26222015 is a deficient number, since it is larger than the sum of its proper divisors (5866489).

26222015 is an equidigital number, since it uses as much as digits as its factorization.

26222015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 26222015 is about 5120.7435983458. The cubic root of 26222015 is about 297.0904469699.

Adding to 26222015 its reverse (51022262), we get a palindrome (77244277).

The spelling of 26222015 in words is "twenty-six million, two hundred twenty-two thousand, fifteen".