1022000000 has 224 divisors, whose sum is σ = 2948399760. Its totient is φ = 345600000.

The previous prime is 1021999997. The next prime is 1022000027. The reversal of 1022000000 is 2201.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 13999964 + ... + 14000036.

Almost surely, 2^1022000000 is an apocalyptic number.

1022000000 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 1022000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474199880).

1022000000 is an abundant number, since it is smaller than the sum of its proper divisors (1926399760).

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

1022000000 is an frugal number, since it uses more digits than its factorization.

1022000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 1022000000 is about 31968.7347262916. The cubic root of 1022000000 is about 1007.2802033523.

Adding to 1022000000 its reverse (2201), we get a palindrome (1022002201).

The spelling of 1022000000 in words is "one billion, twenty-two million", and thus it is an aban number and an uban number.