23283891 has 6 divisors (see below), whose sum is σ = 33632300. Its totient is φ = 15522588.

The previous prime is 23283881. The next prime is 23283893. The reversal of 23283891 is 19838232.

It is a happy number.

It is not a de Polignac number, because 23283891 - 2¹⁰ = 23282867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23283893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1293541 + ... + 1293558.

Almost surely, 2^23283891 is an apocalyptic number.

23283891 is a deficient number, since it is larger than the sum of its proper divisors (10348409).

23283891 is a wasteful number, since it uses less digits than its factorization.

23283891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587105 (or 2587102 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 23283891 is about 4825.3384337267. The cubic root of 23283891 is about 285.5519865501.

The spelling of 23283891 in words is "twenty-three million, two hundred eighty-three thousand, eight hundred ninety-one".