23091016 has 16 divisors (see below), whose sum is σ = 46626300. Its totient is φ = 10657344.

The previous prime is 23090971. The next prime is 23091017. The reversal of 23091016 is 61019032.

It can be written as a sum of positive squares in 2 ways, for example, as 18028516 + 5062500 = 4246^2 + 2250^2 .

It is not an unprimeable number, because it can be changed into a prime (23091017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110911 + ... + 111118.

Almost surely, 2^23091016 is an apocalyptic number.

23091016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23091016 is an abundant number, since it is smaller than the sum of its proper divisors (23535284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23091016 is a wasteful number, since it uses less digits than its factorization.

23091016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222048 (or 222044 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 23091016 is about 4805.3112282140. The cubic root of 23091016 is about 284.7613309133.

The spelling of 23091016 in words is "twenty-three million, ninety-one thousand, sixteen".