1022542620 has 96 divisors (see below), whose sum is σ = 3135476736. Its totient is φ = 246931200.

The previous prime is 1022542613. The next prime is 1022542637. The reversal of 1022542620 is 262452201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176002 + ... + 181718.

It is an arithmetic number, because the mean of its divisors is an integer number (32661216).

Almost surely, 2^1022542620 is an apocalyptic number.

1022542620 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 1022542620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567738368).

1022542620 is an abundant number, since it is smaller than the sum of its proper divisors (2112934116).

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

1022542620 is a wasteful number, since it uses less digits than its factorization.

1022542620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011 (or 6009 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1022542620 is about 31977.2203294783. The cubic root of 1022542620 is about 1007.4584400387.

Adding to 1022542620 its reverse (262452201), we get a palindrome (1284994821).

The spelling of 1022542620 in words is "one billion, twenty-two million, five hundred forty-two thousand, six hundred twenty".