2137980 has 48 divisors (see below), whose sum is σ = 6449184. Its totient is φ = 526080.

The previous prime is 2137979. The next prime is 2137981. The reversal of 2137980 is 897312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2137979) and next prime (2137981).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (134358).

2^2137980 is an apocalyptic number.

2137980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2137980 is an abundant number, since it is smaller than the sum of its proper divisors (4311204).

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

2137980 is a wasteful number, since it uses less digits than its factorization.

2137980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2764 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2137980 is about 1462.1832990429. The cubic root of 2137980 is about 128.8253149064.

The spelling of 2137980 in words is "two million, one hundred thirty-seven thousand, nine hundred eighty".