1012990 has 16 divisors (see below), whose sum is σ = 1989360. Its totient is φ = 368320.

The previous prime is 1012981. The next prime is 1012993. The reversal of 1012990 is 992101.

It is a super-2 number, since 2×1012990² = 2052297480200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4495 + ... + 4714.

It is an arithmetic number, because the mean of its divisors is an integer number (124335).

2^1012990 is an apocalyptic number.

1012990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012990 is a deficient number, since it is larger than the sum of its proper divisors (976370).

1012990 is a wasteful number, since it uses less digits than its factorization.

1012990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1012990 is about 1006.4740433811. The cubic root of 1012990 is about 100.4311385244.

It can be divided in two parts, 1012 and 990, that added together give a palindrome (2002).

The spelling of 1012990 in words is "one million, twelve thousand, nine hundred ninety".