2151360 has 140 divisors (see below), whose sum is σ = 7744968. Its totient is φ = 566784.

The previous prime is 2151353. The next prime is 2151377. The reversal of 2151360 is 631512.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25879 + ... + 25961.

2^2151360 is an apocalyptic number.

2151360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3872484).

2151360 is an abundant number, since it is smaller than the sum of its proper divisors (5593608).

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

2151360 is an equidigital number, since it uses as much as digits as its factorization.

2151360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2151360 is about 1466.7515126974. The cubic root of 2151360 is about 129.0934963083.

Adding to 2151360 its reverse (631512), we get a palindrome (2782872).

The spelling of 2151360 in words is "two million, one hundred fifty-one thousand, three hundred sixty".