23278995 has 40 divisors (see below), whose sum is σ = 42078960. Its totient is φ = 12312000.

The previous prime is 23278993. The next prime is 23278999. The reversal of 23278995 is 59987232.

It is not a de Polignac number, because 23278995 - 2¹ = 23278993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23278995.

It is not an unprimeable number, because it can be changed into a prime (23278993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 92620 + ... + 92870.

It is an arithmetic number, because the mean of its divisors is an integer number (1051974).

Almost surely, 2^23278995 is an apocalyptic number.

23278995 is a deficient number, since it is larger than the sum of its proper divisors (18799965).

23278995 is a wasteful number, since it uses less digits than its factorization.

23278995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 488 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 23278995 is about 4824.8310851262. The cubic root of 23278995 is about 285.5319704149.

The spelling of 23278995 in words is "twenty-three million, two hundred seventy-eight thousand, nine hundred ninety-five".