2139276 has 36 divisors (see below), whose sum is σ = 5233592. Its totient is φ = 680064.

The previous prime is 2139233. The next prime is 2139283. The reversal of 2139276 is 6729312.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6180 + ... + 6516.

2^2139276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616796).

2139276 is an abundant number, since it is smaller than the sum of its proper divisors (3094316).

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

2139276 is a wasteful number, since it uses less digits than its factorization.

2139276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 365 counting only the distinct ones).

The product of its digits is 4536, while the sum is 30.

The square root of 2139276 is about 1462.6264047938. The cubic root of 2139276 is about 128.8513400772.

It can be divided in two parts, 2139 and 276, that added together give a triangular number (2415 = T₆₉).

The spelling of 2139276 in words is "two million, one hundred thirty-nine thousand, two hundred seventy-six".