2129270 has 32 divisors (see below), whose sum is σ = 4505760. Its totient is φ = 714240.

The previous prime is 2129263. The next prime is 2129279. The reversal of 2129270 is 729212.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129279) 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, 686 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (140805).

2^2129270 is an apocalyptic number.

2129270 is an abundant number, since it is smaller than the sum of its proper divisors (2376490).

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

2129270 is a wasteful number, since it uses less digits than its factorization.

2129270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2129270 is about 1459.2018366217. The cubic root of 2129270 is about 128.6501346432.

The spelling of 2129270 in words is "two million, one hundred twenty-nine thousand, two hundred seventy".