2985990 has 64 divisors (see below), whose sum is σ = 8363520. Its totient is φ = 668160.

The previous prime is 2985979. The next prime is 2985991. The reversal of 2985990 is 995892.

It is a super-2 number, since 2×2985990² = 17832272560200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2985991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12270 + ... + 12510.

It is an arithmetic number, because the mean of its divisors is an integer number (130680).

2^2985990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2985990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4181760).

2985990 is an abundant number, since it is smaller than the sum of its proper divisors (5377530).

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

2985990 is a wasteful number, since it uses less digits than its factorization.

2985990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 2985990 is about 1728.0017361102. The cubic root of 2985990 is about 144.0000964506. Note that the first 4 decimals are identical.

The spelling of 2985990 in words is "two million, nine hundred eighty-five thousand, nine hundred ninety".