722020100 has 18 divisors (see below), whose sum is σ = 1566783834. Its totient is φ = 288808000.

The previous prime is 722020097. The next prime is 722020129. The reversal of 722020100 is 1020227.

It can be written as a sum of positive squares in 3 ways, for example, as 238144 + 721781956 = 488^2 + 26866^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3610001 + ... + 3610200.

Almost surely, 2^722020100 is an apocalyptic number.

It is an amenable number.

722020100 is an abundant number, since it is smaller than the sum of its proper divisors (844763734).

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

722020100 is a wasteful number, since it uses less digits than its factorization.

722020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220215 (or 7220208 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 722020100 is about 26870.4317047568. The cubic root of 722020100 is about 897.1183967519.

Adding to 722020100 its reverse (1020227), we get a palindrome (723040327).

The spelling of 722020100 in words is "seven hundred twenty-two million, twenty thousand, one hundred".