1022521980 has 96 divisors (see below), whose sum is σ = 2985228288. Its totient is φ = 261216000.

The previous prime is 1022521961. The next prime is 1022521987. The reversal of 1022521980 is 891252201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022521987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185139 + ... + 190581.

It is an arithmetic number, because the mean of its divisors is an integer number (31096128).

Almost surely, 2^1022521980 is an apocalyptic number.

1022521980 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 1022521980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492614144).

1022521980 is an abundant number, since it is smaller than the sum of its proper divisors (1962706308).

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

1022521980 is a wasteful number, since it uses less digits than its factorization.

1022521980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587 (or 5585 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1022521980 is about 31976.8975981098. The cubic root of 1022521980 is about 1007.4516614843.

The spelling of 1022521980 in words is "one billion, twenty-two million, five hundred twenty-one thousand, nine hundred eighty".