2715780 has 24 divisors (see below), whose sum is σ = 7604352. Its totient is φ = 724192.

The previous prime is 2715749. The next prime is 2715787. The reversal of 2715780 is 875172.

It is a happy number.

It is a super-2 number, since 2×2715780² = 14750922016800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2715787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22572 + ... + 22691.

It is an arithmetic number, because the mean of its divisors is an integer number (316848).

2^2715780 is an apocalyptic number.

2715780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2715780 is an abundant number, since it is smaller than the sum of its proper divisors (4888572).

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

2715780 is a wasteful number, since it uses less digits than its factorization.

2715780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45275 (or 45273 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 2715780 is about 1647.9623782113. The cubic root of 2715780 is about 139.5184133143.

The spelling of 2715780 in words is "two million, seven hundred fifteen thousand, seven hundred eighty".