1772226840 has 64 divisors (see below), whose sum is σ = 5389538400. Its totient is φ = 466117632.

The previous prime is 1772226823. The next prime is 1772226847. The reversal of 1772226840 is 486222771.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772226847) 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 15 ways as a sum of consecutive naturals, for example, 92395 + ... + 109914.

Almost surely, 2^1772226840 is an apocalyptic number.

1772226840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1772226840 is an abundant number, since it is smaller than the sum of its proper divisors (3617311560).

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

1772226840 is a wasteful number, since it uses less digits than its factorization.

1772226840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202396 (or 202392 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 1772226840 is about 42097.8246468864. The cubic root of 1772226840 is about 1210.1515735717.

The spelling of 1772226840 in words is "one billion, seven hundred seventy-two million, two hundred twenty-six thousand, eight hundred forty".