1020662250 has 128 divisors (see below), whose sum is σ = 2660636160. Its totient is φ = 260288000.

The previous prime is 1020662249. The next prime is 1020662257. The reversal of 1020662250 is 522660201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020662250.

It is not an unprimeable number, because it can be changed into a prime (1020662257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3632110 + ... + 3632390.

It is an arithmetic number, because the mean of its divisors is an integer number (20786220).

Almost surely, 2^1020662250 is an apocalyptic number.

1020662250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020662250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330318080).

1020662250 is an abundant number, since it is smaller than the sum of its proper divisors (1639973910).

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

1020662250 is a wasteful number, since it uses less digits than its factorization.

1020662250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1020662250 is about 31947.8050889259. The cubic root of 1020662250 is about 1006.8405172944.

The spelling of 1020662250 in words is "one billion, twenty million, six hundred sixty-two thousand, two hundred fifty".