2153790 has 40 divisors (see below), whose sum is σ = 5793480. Its totient is φ = 574128.

The previous prime is 2153779. The next prime is 2153797. The reversal of 2153790 is 973512.

It is a super-2 number, since 2×2153790² = 9277622728200, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153797) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 520 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (144837).

2^2153790 is an apocalyptic number.

2153790 is an abundant number, since it is smaller than the sum of its proper divisors (3639690).

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

2153790 is a wasteful number, since it uses less digits than its factorization.

2153790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2153790 is about 1467.5796400877. The cubic root of 2153790 is about 129.1420824989.

It can be divided in two parts, 215 and 3790, that added together give a triangular number (4005 = T₈₉).

The spelling of 2153790 in words is "two million, one hundred fifty-three thousand, seven hundred ninety".