23515434 has 40 divisors (see below), whose sum is σ = 52968960. Its totient is φ = 7797384.

The previous prime is 23515423. The next prime is 23515441. The reversal of 23515434 is 43451532.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23515398 and 23515407.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61207 + ... + 61589.

It is an arithmetic number, because the mean of its divisors is an integer number (1324224).

Almost surely, 2^23515434 is an apocalyptic number.

23515434 is an abundant number, since it is smaller than the sum of its proper divisors (29453526).

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

23515434 is a wasteful number, since it uses less digits than its factorization.

23515434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 767 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 23515434 is about 4849.2714916779. The cubic root of 23515434 is about 286.4954084953.

Adding to 23515434 its reverse (43451532), we get a palindrome (66966966).

The spelling of 23515434 in words is "twenty-three million, five hundred fifteen thousand, four hundred thirty-four".