23971995 has 24 divisors (see below), whose sum is σ = 42260400. Its totient is φ = 12566976.

The previous prime is 23971993. The next prime is 23972017. The reversal of 23971995 is 59917932.

It is a happy number.

It is not a de Polignac number, because 23971995 - 2¹ = 23971993 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 23971995.

It is not an unprimeable number, because it can be changed into a prime (23971991) 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, 1860 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1760850).

Almost surely, 2^23971995 is an apocalyptic number.

23971995 is a deficient number, since it is larger than the sum of its proper divisors (18288405).

23971995 is a wasteful number, since it uses less digits than its factorization.

23971995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099 (or 9096 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 23971995 is about 4896.1204029313. The cubic root of 23971995 is about 288.3376753962.

The spelling of 23971995 in words is "twenty-three million, nine hundred seventy-one thousand, nine hundred ninety-five".