71299800 has 288 divisors, whose sum is σ = 282325680. Its totient is φ = 15897600.

The previous prime is 71299759. The next prime is 71299801. The reversal of 71299800 is 899217.

It is a happy number.

It is a super-2 number, since 2×71299800² = 10167322960080000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71299801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 257262 + ... + 257538.

Almost surely, 2^71299800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71299800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141162840).

71299800 is an abundant number, since it is smaller than the sum of its proper divisors (211025880).

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

71299800 is a wasteful number, since it uses less digits than its factorization.

71299800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 71299800 is about 8443.9208902026. The cubic root of 71299800 is about 414.6637814866.

The spelling of 71299800 in words is "seventy-one million, two hundred ninety-nine thousand, eight hundred".