2140722 has 32 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 688464.

The previous prime is 2140681. The next prime is 2140729. The reversal of 2140722 is 2270412.

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 = 2140695 and 2140704.

It is not an unprimeable number, because it can be changed into a prime (2140729) 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, 883 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (153900).

2^2140722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2140722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462400).

2140722 is an abundant number, since it is smaller than the sum of its proper divisors (2784078).

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

2140722 is a wasteful number, since it uses less digits than its factorization.

2140722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2140722 is about 1463.1206375416. The cubic root of 2140722 is about 128.8803650174.

The spelling of 2140722 in words is "two million, one hundred forty thousand, seven hundred twenty-two".