187823340 has 48 divisors (see below), whose sum is σ = 584340960. Its totient is φ = 50086080.

The previous prime is 187823323. The next prime is 187823347. The reversal of 187823340 is 43328781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 187823295 and 187823304.

It is not an unprimeable number, because it can be changed into a prime (187823347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173371 + ... + 174450.

It is an arithmetic number, because the mean of its divisors is an integer number (12173770).

Almost surely, 2^187823340 is an apocalyptic number.

187823340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187823340 is an abundant number, since it is smaller than the sum of its proper divisors (396517620).

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

187823340 is a wasteful number, since it uses less digits than its factorization.

187823340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347839 (or 347831 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 187823340 is about 13704.8655593552. The cubic root of 187823340 is about 572.6859384723.

It can be divided in two parts, 18782 and 3340, that added together give a palindrome (22122).

The spelling of 187823340 in words is "one hundred eighty-seven million, eight hundred twenty-three thousand, three hundred forty".