2120730 has 32 divisors (see below), whose sum is σ = 5128704. Its totient is φ = 561216.

The previous prime is 2120693. The next prime is 2120731. The reversal of 2120730 is 370212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2120731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6532 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (160272).

2^2120730 is an apocalyptic number.

2120730 is an abundant number, since it is smaller than the sum of its proper divisors (3007974).

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

2120730 is a wasteful number, since it uses less digits than its factorization.

2120730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 2120730 is about 1456.2726393090. The cubic root of 2120730 is about 128.4779090652.

Adding to 2120730 its reverse (370212), we get a palindrome (2490942).

It can be divided in two parts, 2120 and 730, that added together give a triangular number (2850 = T₇₅).

The spelling of 2120730 in words is "two million, one hundred twenty thousand, seven hundred thirty".