2189902 has 48 divisors (see below), whose sum is σ = 4216320. Its totient is φ = 842400.

The previous prime is 2189881. The next prime is 2189939. The reversal of 2189902 is 2099812.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 70627 + ... + 70657.

It is an arithmetic number, because the mean of its divisors is an integer number (87840).

2^2189902 is an apocalyptic number.

2189902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2189902 is a deficient number, since it is larger than the sum of its proper divisors (2026418).

2189902 is a wasteful number, since it uses less digits than its factorization.

2189902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2189902 is about 1479.8317471929. The cubic root of 2189902 is about 129.8598489596.

The spelling of 2189902 in words is "two million, one hundred eighty-nine thousand, nine hundred two".