813250000 has 70 divisors (see below), whose sum is σ = 1970170094. Its totient is φ = 325200000.

The previous prime is 813249979. The next prime is 813250051. The reversal of 813250000 is 52318.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 730512784 + 82737216 = 27028^2 + 9096^2 .

It is a super-2 number, since 2×813250000² = 1322751125000000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813250000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 248374 + ... + 251626.

Almost surely, 2^813250000 is an apocalyptic number.

813250000 is a gapful number since it is divisible by the number (80) 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 813250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985085047).

813250000 is an abundant number, since it is smaller than the sum of its proper divisors (1156920094).

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

813250000 is an frugal number, since it uses more digits than its factorization.

813250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 813250000 is about 28517.5384631984. The cubic root of 813250000 is about 933.4148171490.

The spelling of 813250000 in words is "eight hundred thirteen million, two hundred fifty thousand".