23472137 has 4 divisors (see below), whose sum is σ = 25277700. Its totient is φ = 21666576.

The previous prime is 23472079. The next prime is 23472139. The reversal of 23472137 is 73127432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7639696 + 15832441 = 2764^2 + 3979^2 .

It is a cyclic number.

It is not a de Polignac number, because 23472137 - 2¹⁰ = 23471113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23472139) 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, 902762 + ... + 902787.

It is an arithmetic number, because the mean of its divisors is an integer number (6319425).

Almost surely, 2^23472137 is an apocalyptic number.

It is an amenable number.

23472137 is a deficient number, since it is larger than the sum of its proper divisors (1805563).

23472137 is a wasteful number, since it uses less digits than its factorization.

23472137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805562.

The product of its digits is 7056, while the sum is 29.

The square root of 23472137 is about 4844.8051560408. The cubic root of 23472137 is about 286.3194671319.

Adding to 23472137 its reverse (73127432), we get a palindrome (96599569).

The spelling of 23472137 in words is "twenty-three million, four hundred seventy-two thousand, one hundred thirty-seven".