186423420 has 48 divisors (see below), whose sum is σ = 523877760. Its totient is φ = 49532736.

The previous prime is 186423409. The next prime is 186423437. The reversal of 186423420 is 24324681.

186423420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11491 + ... + 22469.

It is an arithmetic number, because the mean of its divisors is an integer number (10914120).

Almost surely, 2^186423420 is an apocalyptic number.

186423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

186423420 is an abundant number, since it is smaller than the sum of its proper divisors (337454340).

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

186423420 is a wasteful number, since it uses less digits than its factorization.

186423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11274 (or 11272 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 186423420 is about 13653.6962028602. The cubic root of 186423420 is about 571.2595722260.

The spelling of 186423420 in words is "one hundred eighty-six million, four hundred twenty-three thousand, four hundred twenty".