2664280 has 32 divisors (see below), whose sum is σ = 6138000. Its totient is φ = 1040256.

The previous prime is 2664271. The next prime is 2664293. The reversal of 2664280 is 824662.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946 + ... + 2494.

2^2664280 is an apocalyptic number.

2664280 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 2664280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3069000).

2664280 is an abundant number, since it is smaller than the sum of its proper divisors (3473720).

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

2664280 is a wasteful number, since it uses less digits than its factorization.

2664280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2664280 is about 1632.2622338338. The cubic root of 2664280 is about 138.6308719657.

The spelling of 2664280 in words is "two million, six hundred sixty-four thousand, two hundred eighty".