2151828 has 36 divisors (see below), whose sum is σ = 6217120. Its totient is φ = 614736.

The previous prime is 2151827. The next prime is 2151847. The reversal of 2151828 is 8281512.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4018 + ... + 4521.

2^2151828 is an apocalyptic number.

2151828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2151828 is an abundant number, since it is smaller than the sum of its proper divisors (4065292).

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

2151828 is a wasteful number, since it uses less digits than its factorization.

2151828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8556 (or 8551 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2151828 is about 1466.9110402475. The cubic root of 2151828 is about 129.1028564922.

The spelling of 2151828 in words is "two million, one hundred fifty-one thousand, eight hundred twenty-eight".