1900722 has 16 divisors (see below), whose sum is σ = 4001760. Its totient is φ = 600192.

The previous prime is 1900721. The next prime is 1900733. The reversal of 1900722 is 2270091.

It is a happy number.

It is a super-2 number, since 2×1900722² = 7225488242568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8223 + ... + 8450.

It is an arithmetic number, because the mean of its divisors is an integer number (250110).

2^1900722 is an apocalyptic number.

1900722 is an abundant number, since it is smaller than the sum of its proper divisors (2101038).

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

1900722 is a wasteful number, since it uses less digits than its factorization.

1900722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16697.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1900722 is about 1378.6667472598. Note that the first 3 decimals coincide. The cubic root of 1900722 is about 123.8719194324.

The spelling of 1900722 in words is "one million, nine hundred thousand, seven hundred twenty-two".