187400768 has 14 divisors (see below), whose sum is σ = 371873526. Its totient is φ = 93700352.

The previous prime is 187400767. The next prime is 187400783. The reversal of 187400768 is 867004781.

It can be written as a sum of positive squares in only one way, i.e., 135675904 + 51724864 = 11648^2 + 7192^2 .

It is not an unprimeable number, because it can be changed into a prime (187400767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1464005 + ... + 1464132.

Almost surely, 2^187400768 is an apocalyptic number.

It is an amenable number.

187400768 is a deficient number, since it is larger than the sum of its proper divisors (184472758).

187400768 is an equidigital number, since it uses as much as digits as its factorization.

187400768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928149 (or 2928139 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 187400768 is about 13689.4400177655. The cubic root of 187400768 is about 572.2561325400.

The spelling of 187400768 in words is "one hundred eighty-seven million, four hundred thousand, seven hundred sixty-eight".