23478791 has 24 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 18942000.

The previous prime is 23478787. The next prime is 23478809. The reversal of 23478791 is 19787432.

It is not a de Polignac number, because 23478791 - 2² = 23478787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93416 + ... + 93666.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^23478791 is an apocalyptic number.

23478791 is a deficient number, since it is larger than the sum of its proper divisors (5479033).

23478791 is a wasteful number, since it uses less digits than its factorization.

23478791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 364 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 23478791 is about 4845.4918223025. The cubic root of 23478791 is about 286.3465203388.

The spelling of 23478791 in words is "twenty-three million, four hundred seventy-eight thousand, seven hundred ninety-one".