1487990 has 32 divisors (see below), whose sum is σ = 3170880. Its totient is φ = 491904.

The previous prime is 1487989. The next prime is 1488007. The reversal of 1487990 is 997841.

It is a super-2 number, since 2×1487990² = 4428228480200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1664 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (99090).

2^1487990 is an apocalyptic number.

1487990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1487990 is an abundant number, since it is smaller than the sum of its proper divisors (1682890).

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

1487990 is a wasteful number, since it uses less digits than its factorization.

1487990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1487990 is about 1219.8319556398. The cubic root of 1487990 is about 114.1650937204.

The spelling of 1487990 in words is "one million, four hundred eighty-seven thousand, nine hundred ninety".