2129436 has 24 divisors (see below), whose sum is σ = 5521040. Its totient is φ = 709776.

The previous prime is 2129431. The next prime is 2129443. The reversal of 2129436 is 6349212.

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

It is a nude number because it is divisible by every one of its digits.

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 (2129431) 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, 9751 + ... + 9966.

2^2129436 is an apocalyptic number.

It is an amenable number.

2129436 is an abundant number, since it is smaller than the sum of its proper divisors (3391604).

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

2129436 is a wasteful number, since it uses less digits than its factorization.

2129436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19730 (or 19722 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2129436 is about 1459.2587159239. The cubic root of 2129436 is about 128.6534777870.

The spelling of 2129436 in words is "two million, one hundred twenty-nine thousand, four hundred thirty-six".