190887487 has 12 divisors (see below), whose sum is σ = 223289976. Its totient is φ = 162706320.

The previous prime is 190887469. The next prime is 190887493. The reversal of 190887487 is 784788091.

It is not a de Polignac number, because 190887487 - 2¹¹ = 190885439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190887457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1893 + ... + 19630.

It is an arithmetic number, because the mean of its divisors is an integer number (18607498).

Almost surely, 2^190887487 is an apocalyptic number.

190887487 is a deficient number, since it is larger than the sum of its proper divisors (32402489).

190887487 is a wasteful number, since it uses less digits than its factorization.

190887487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21718 (or 21711 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 190887487 is about 13816.2037839632. The cubic root of 190887487 is about 575.7834180829.

The spelling of 190887487 in words is "one hundred ninety million, eight hundred eighty-seven thousand, four hundred eighty-seven".