2770020 has 72 divisors (see below), whose sum is σ = 9172800. Its totient is φ = 671040.

The previous prime is 2769983. The next prime is 2770043. The reversal of 2770020 is 200772.

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

It is a junction number, because it is equal to n+sod(n) for n = 2769975 and 2770002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1281 + ... + 2679.

It is an arithmetic number, because the mean of its divisors is an integer number (127400).

2^2770020 is an apocalyptic number.

2770020 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 2770020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4586400).

2770020 is an abundant number, since it is smaller than the sum of its proper divisors (6402780).

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

2770020 is a wasteful number, since it uses less digits than its factorization.

2770020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 2770020 is about 1664.3377061162. The cubic root of 2770020 is about 140.4411256055.

Adding to 2770020 its reverse (200772), we get a palindrome (2970792).

It can be divided in two parts, 27 and 70020, that multiplied together give a triangular number (1890540 = T₁₉₄₄).

The spelling of 2770020 in words is "two million, seven hundred seventy thousand, twenty".