1828776440 has 32 divisors (see below), whose sum is σ = 4116312000. Its totient is φ = 731232384.

The previous prime is 1828776431. The next prime is 1828776461. The reversal of 1828776440 is 446778281.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122081 + ... + 136239.

It is an arithmetic number, because the mean of its divisors is an integer number (128634750).

Almost surely, 2^1828776440 is an apocalyptic number.

1828776440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1828776440 is an abundant number, since it is smaller than the sum of its proper divisors (2287535560).

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

1828776440 is a wasteful number, since it uses less digits than its factorization.

1828776440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17399 (or 17395 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 1828776440 is about 42764.1957716967. The cubic root of 1828776440 is about 1222.8885331533. Note that the first 3 decimals are identical.

The spelling of 1828776440 in words is "one billion, eight hundred twenty-eight million, seven hundred seventy-six thousand, four hundred forty".