187215452 has 6 divisors (see below), whose sum is σ = 327627048. Its totient is φ = 93607724.

The previous prime is 187215401. The next prime is 187215461. The reversal of 187215452 is 254512781.

187215452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23401928 + ... + 23401935.

It is an arithmetic number, because the mean of its divisors is an integer number (54604508).

Almost surely, 2^187215452 is an apocalyptic number.

It is an amenable number.

187215452 is a deficient number, since it is larger than the sum of its proper divisors (140411596).

187215452 is a wasteful number, since it uses less digits than its factorization.

187215452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46803867 (or 46803865 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 187215452 is about 13682.6697687257. The cubic root of 187215452 is about 572.0674403343.

The spelling of 187215452 in words is "one hundred eighty-seven million, two hundred fifteen thousand, four hundred fifty-two".