187490040 has 32 divisors (see below), whose sum is σ = 562470480. Its totient is φ = 49997312.

The previous prime is 187490033. The next prime is 187490057. The reversal of 187490040 is 40094781.

It is a junction number, because it is equal to n+sod(n) for n = 187489983 and 187490010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781089 + ... + 781328.

Almost surely, 2^187490040 is an apocalyptic number.

187490040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187490040 is an abundant number, since it is smaller than the sum of its proper divisors (374980440).

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

187490040 is a wasteful number, since it uses less digits than its factorization.

187490040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562431 (or 1562427 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 187490040 is about 13692.7002450211. The cubic root of 187490040 is about 572.3469865605.

The spelling of 187490040 in words is "one hundred eighty-seven million, four hundred ninety thousand, forty".