2129544 has 32 divisors (see below), whose sum is σ = 5916000. Its totient is φ = 709776.

The previous prime is 2129537. The next prime is 2129549. The reversal of 2129544 is 4459212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2129549) 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, 4714 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (184875).

2^2129544 is an apocalyptic number.

2129544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2129544 is an abundant number, since it is smaller than the sum of its proper divisors (3786456).

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

2129544 is a wasteful number, since it uses less digits than its factorization.

2129544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9874 (or 9864 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2129544 is about 1459.2957205447. The cubic root of 2129544 is about 128.6556527511.

The spelling of 2129544 in words is "two million, one hundred twenty-nine thousand, five hundred forty-four".