23155434 has 24 divisors (see below), whose sum is σ = 52352352. Its totient is φ = 7382760.

The previous prime is 23155373. The next prime is 23155463. The reversal of 23155434 is 43455132.

It is a junction number, because it is equal to n+sod(n) for n = 23155398 and 23155407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27552 + ... + 28379.

It is an arithmetic number, because the mean of its divisors is an integer number (2181348).

Almost surely, 2^23155434 is an apocalyptic number.

23155434 is an abundant number, since it is smaller than the sum of its proper divisors (29196918).

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

23155434 is a wasteful number, since it uses less digits than its factorization.

23155434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55962 (or 55959 counting only the distinct ones).

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

The square root of 23155434 is about 4812.0093516119. The cubic root of 23155434 is about 285.0258886917.

The spelling of 23155434 in words is "twenty-three million, one hundred fifty-five thousand, four hundred thirty-four".