1022745100 has 72 divisors (see below), whose sum is σ = 2405780048. Its totient is φ = 375148800.

The previous prime is 1022745079. The next prime is 1022745103. The reversal of 1022745100 is 15472201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1022745103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201595 + ... + 206605.

Almost surely, 2^1022745100 is an apocalyptic number.

1022745100 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 1022745100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202890024).

1022745100 is an abundant number, since it is smaller than the sum of its proper divisors (1383034948).

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

1022745100 is a wasteful number, since it uses less digits than its factorization.

1022745100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195 (or 5188 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1022745100 is about 31980.3861765301. The cubic root of 1022745100 is about 1007.5249333460.

The spelling of 1022745100 in words is "one billion, twenty-two million, seven hundred forty-five thousand, one hundred".