2799720 has 192 divisors, whose sum is σ = 11456640. Its totient is φ = 576000.

The previous prime is 2799661. The next prime is 2799733. The reversal of 2799720 is 279972.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27670 + ... + 27770.

It is an arithmetic number, because the mean of its divisors is an integer number (59670).

2^2799720 is an apocalyptic number.

2799720 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 2799720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5728320).

2799720 is an abundant number, since it is smaller than the sum of its proper divisors (8656920).

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

2799720 is a wasteful number, since it uses less digits than its factorization.

2799720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 2799720 is about 1673.2363849737. The cubic root of 2799720 is about 140.9412762855.

It can be divided in two parts, 279 and 9720, that added together give a palindrome (9999).

The spelling of 2799720 in words is "two million, seven hundred ninety-nine thousand, seven hundred twenty".