2139580 has 12 divisors (see below), whose sum is σ = 4493160. Its totient is φ = 855824.

The previous prime is 2139563. The next prime is 2139583. The reversal of 2139580 is 859312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53470 + ... + 53509.

It is an arithmetic number, because the mean of its divisors is an integer number (374430).

2^2139580 is an apocalyptic number.

2139580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139580 is an abundant number, since it is smaller than the sum of its proper divisors (2353580).

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

2139580 is a wasteful number, since it uses less digits than its factorization.

2139580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106988 (or 106986 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2139580 is about 1462.7303237439. The cubic root of 2139580 is about 128.8574432249.

It can be divided in two parts, 21 and 39580, that added together give a square (39601 = 199²).

The spelling of 2139580 in words is "two million, one hundred thirty-nine thousand, five hundred eighty".