2149860 has 24 divisors (see below), whose sum is σ = 6019776. Its totient is φ = 573280.

The previous prime is 2149859. The next prime is 2149867. The reversal of 2149860 is 689412.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2149867) 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, 17856 + ... + 17975.

It is an arithmetic number, because the mean of its divisors is an integer number (250824).

2^2149860 is an apocalyptic number.

2149860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149860 is an abundant number, since it is smaller than the sum of its proper divisors (3869916).

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

2149860 is a wasteful number, since it uses less digits than its factorization.

2149860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35843 (or 35841 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2149860 is about 1466.2400894806. The cubic root of 2149860 is about 129.0634865678.

The spelling of 2149860 in words is "two million, one hundred forty-nine thousand, eight hundred sixty".