2790000 has 150 divisors (see below), whose sum is σ = 10071776. Its totient is φ = 720000.

The previous prime is 2789993. The next prime is 2790001. The reversal of 2790000 is 972.

It is a tau number, because it is divible by the number of its divisors (150).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 89985 + ... + 90015.

2^2790000 is an apocalyptic number.

2790000 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 2790000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5035888).

2790000 is an abundant number, since it is smaller than the sum of its proper divisors (7281776).

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

2790000 is a wasteful number, since it uses less digits than its factorization.

2790000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 2790000 is about 1670.3293088490. The cubic root of 2790000 is about 140.7779816637. Note that the first 3 decimals are identical.

Adding to 2790000 its reverse (972), we get a palindrome (2790972).

The spelling of 2790000 in words is "two million, seven hundred ninety thousand".