722490912 has 288 divisors, whose sum is σ = 2466749376. Its totient is φ = 197683200.

The previous prime is 722490911. The next prime is 722490947. The reversal of 722490912 is 219094227.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (722490911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2182587 + ... + 2182917.

It is an arithmetic number, because the mean of its divisors is an integer number (8565102).

Almost surely, 2^722490912 is an apocalyptic number.

722490912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722490912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233374688).

722490912 is an abundant number, since it is smaller than the sum of its proper divisors (1744258464).

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

722490912 is a wasteful number, since it uses less digits than its factorization.

722490912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 722490912 is about 26879.1910592562. The cubic root of 722490912 is about 897.3133508505.

It can be divided in two parts, 72 and 2490912, that multiplied together give a square (179345664 = 13392²).

The spelling of 722490912 in words is "seven hundred twenty-two million, four hundred ninety thousand, nine hundred twelve".