23215946 has 16 divisors (see below), whose sum is σ = 38517864. Its totient is φ = 10425024.

The previous prime is 23215943. The next prime is 23215949. The reversal of 23215946 is 64951232.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23215943) and next prime (23215949).

It can be written as a sum of positive squares in 4 ways, for example, as 19936225 + 3279721 = 4465^2 + 1811^2 .

It is not an unprimeable number, because it can be changed into a prime (23215943) 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 7 ways as a sum of consecutive naturals, for example, 11105 + ... + 13028.

Almost surely, 2^23215946 is an apocalyptic number.

23215946 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

23215946 is a deficient number, since it is larger than the sum of its proper divisors (15301918).

23215946 is a wasteful number, since it uses less digits than its factorization.

23215946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24185.

The product of its digits is 12960, while the sum is 32.

The square root of 23215946 is about 4818.2928512078. The cubic root of 23215946 is about 285.2739583829.

The spelling of 23215946 in words is "twenty-three million, two hundred fifteen thousand, nine hundred forty-six".