1018722 has 16 divisors (see below), whose sum is σ = 2103552. Its totient is φ = 328560.

The previous prime is 1018711. The next prime is 1018729. The reversal of 1018722 is 2278101.

It is not an unprimeable number, because it can be changed into a prime (1018729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2553 + ... + 2924.

It is an arithmetic number, because the mean of its divisors is an integer number (131472).

2^1018722 is an apocalyptic number.

1018722 is an abundant number, since it is smaller than the sum of its proper divisors (1084830).

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

1018722 is a wasteful number, since it uses less digits than its factorization.

1018722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1018722 is about 1009.3175912467. The cubic root of 1018722 is about 100.6202120840.

The spelling of 1018722 in words is "one million, eighteen thousand, seven hundred twenty-two".