7850990 has 32 divisors (see below), whose sum is σ = 17003520. Its totient is φ = 2549664.

The previous prime is 7850987. The next prime is 7851001. The reversal of 7850990 is 990587.

7850990 = 60² + 61² + ... + 287².

It is a Harshad number since it is a multiple of its sum of digits (38).

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 15 ways as a sum of consecutive naturals, for example, 1622 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (531360).

Almost surely, 2^7850990 is an apocalyptic number.

7850990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7850990 is an abundant number, since it is smaller than the sum of its proper divisors (9152530).

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

7850990 is a wasteful number, since it uses less digits than its factorization.

7850990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 7850990 is about 2801.9618127305. The cubic root of 7850990 is about 198.7504595008.

The spelling of 7850990 in words is "seven million, eight hundred fifty thousand, nine hundred ninety".