1772221088 has 96 divisors (see below), whose sum is σ = 3969000000. Its totient is φ = 771563520.

The previous prime is 1772221069. The next prime is 1772221097. The reversal of 1772221088 is 8801222771.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1418288 + ... + 1419536.

It is an arithmetic number, because the mean of its divisors is an integer number (41343750).

Almost surely, 2^1772221088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1772221088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984500000).

1772221088 is an abundant number, since it is smaller than the sum of its proper divisors (2196778912).

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

1772221088 is a wasteful number, since it uses less digits than its factorization.

1772221088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 1772221088 is about 42097.7563297618. The cubic root of 1772221088 is about 1210.1502643338.

The spelling of 1772221088 in words is "one billion, seven hundred seventy-two million, two hundred twenty-one thousand, eighty-eight".