1002990 has 32 divisors (see below), whose sum is σ = 2448000. Its totient is φ = 262944.

The previous prime is 1002979. The next prime is 1003001. The reversal of 1002990 is 992001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1002979) and next prime (1003001).

It is a Curzon 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, 1761 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (76500).

2^1002990 is an apocalyptic number.

1002990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224000).

1002990 is an abundant number, since it is smaller than the sum of its proper divisors (1445010).

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

1002990 is a wasteful number, since it uses less digits than its factorization.

1002990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1002990 is about 1001.4938841551. The cubic root of 1002990 is about 100.0995674969.

Adding to 1002990 its reverse (992001), we get a palindrome (1994991).

The spelling of 1002990 in words is "one million, two thousand, nine hundred ninety".