1022860840 has 32 divisors (see below), whose sum is σ = 2302473960. Its totient is φ = 408960000.

The previous prime is 1022860831. The next prime is 1022860843. The reversal of 1022860840 is 480682201.

It can be written as a sum of positive squares in 4 ways, for example, as 827252644 + 195608196 = 28762^2 + 13986^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1022860843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115780 + ... + 124300.

Almost surely, 2^1022860840 is an apocalyptic number.

1022860840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022860840 is an abundant number, since it is smaller than the sum of its proper divisors (1279613120).

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

1022860840 is a wasteful number, since it uses less digits than its factorization.

1022860840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11533 (or 11529 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1022860840 is about 31982.1956719672. The cubic root of 1022860840 is about 1007.5629377771.

The spelling of 1022860840 in words is "one billion, twenty-two million, eight hundred sixty thousand, eight hundred forty".