23137650 has 120 divisors (see below), whose sum is σ = 66842820. Its totient is φ = 5927040.

The previous prime is 23137643. The next prime is 23137651. The reversal of 23137650 is 5673132.

23137650 = T₁₃₄₈ + T₁₃₄₉ + ... + T₁₃₇₂.

It is a happy number.

23137650 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 7 + 650 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 15896169 + 7241481 = 3987^2 + 2691^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23137651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 117352 + ... + 117548.

Almost surely, 2^23137650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23137650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33421410).

23137650 is an abundant number, since it is smaller than the sum of its proper divisors (43705170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23137650 is a wasteful number, since it uses less digits than its factorization.

23137650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 23137650 is about 4810.1611199626. The cubic root of 23137650 is about 284.9529008041.

The spelling of 23137650 in words is "twenty-three million, one hundred thirty-seven thousand, six hundred fifty".