186234428 has 12 divisors (see below), whose sum is σ = 343063560. Its totient is φ = 88216272.

The previous prime is 186234401. The next prime is 186234467. The reversal of 186234428 is 824432681.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 186234391 and 186234400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225151 + ... + 1225302.

It is an arithmetic number, because the mean of its divisors is an integer number (28588630).

Almost surely, 2^186234428 is an apocalyptic number.

It is an amenable number.

186234428 is a deficient number, since it is larger than the sum of its proper divisors (156829132).

186234428 is a wasteful number, since it uses less digits than its factorization.

186234428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450476 (or 2450474 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 186234428 is about 13646.7735380932. The cubic root of 186234428 is about 571.0664634537.

The spelling of 186234428 in words is "one hundred eighty-six million, two hundred thirty-four thousand, four hundred twenty-eight".