1022978880 has 504 divisors, whose sum is σ = 4471964640. Its totient is φ = 212244480.

The previous prime is 1022978813. The next prime is 1022978897. The reversal of 1022978880 is 888792201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1551991 + ... + 1552649.

Almost surely, 2^1022978880 is an apocalyptic number.

1022978880 is a gapful number since it is divisible by the number (10) 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 1022978880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2235982320).

1022978880 is an abundant number, since it is smaller than the sum of its proper divisors (3448985760).

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

1022978880 is a wasteful number, since it uses less digits than its factorization.

1022978880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 1022978880 is about 31984.0410204840. The cubic root of 1022978880 is about 1007.6016944844.

The spelling of 1022978880 in words is "one billion, twenty-two million, nine hundred seventy-eight thousand, eight hundred eighty".