2889990 has 48 divisors (see below), whose sum is σ = 7598448. Its totient is φ = 762048.

The previous prime is 2889979. The next prime is 2890001. The reversal of 2889990 is 999882.

It is an interprime number because it is at equal distance from previous prime (2889979) and next prime (2890001).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14572 + ... + 14768.

It is an arithmetic number, because the mean of its divisors is an integer number (158301).

2^2889990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2889990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799224).

2889990 is an abundant number, since it is smaller than the sum of its proper divisors (4708458).

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

2889990 is a wasteful number, since it uses less digits than its factorization.

2889990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2889990 is about 1699.9970588210. The cubic root of 2889990 is about 142.4400486502.

The spelling of 2889990 in words is "two million, eight hundred eighty-nine thousand, nine hundred ninety".