23528987 has 2 divisors, whose sum is σ = 23528988. Its totient is φ = 23528986.

The previous prime is 23528983. The next prime is 23529001. The reversal of 23528987 is 78982532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23528987 - 2² = 23528983 is a prime.

It is a super-2 number, since 2×23528987² = 1107226458492338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23528983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11764493 + 11764494.

It is an arithmetic number, because the mean of its divisors is an integer number (11764494).

Almost surely, 2^23528987 is an apocalyptic number.

23528987 is a deficient number, since it is larger than the sum of its proper divisors (1).

23528987 is an equidigital number, since it uses as much as digits as its factorization.

23528987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 23528987 is about 4850.6687167853. The cubic root of 23528987 is about 286.5504379786.

The spelling of 23528987 in words is "twenty-three million, five hundred twenty-eight thousand, nine hundred eighty-seven".