71290800 has 480 divisors, whose sum is σ = 309980160. Its totient is φ = 15206400.

The previous prime is 71290799. The next prime is 71290801. The reversal of 71290800 is 809217.

It is an interprime number because it is at equal distance from previous prime (71290799) and next prime (71290801).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71290801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1738780 + ... + 1738820.

It is an arithmetic number, because the mean of its divisors is an integer number (645792).

Almost surely, 2^71290800 is an apocalyptic number.

71290800 is a gapful number since it is divisible by the number (70) 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 71290800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154990080).

71290800 is an abundant number, since it is smaller than the sum of its proper divisors (238689360).

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

71290800 is a wasteful number, since it uses less digits than its factorization.

71290800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 71290800 is about 8443.3879456057. The cubic root of 71290800 is about 414.6463334196.

The spelling of 71290800 in words is "seventy-one million, two hundred ninety thousand, eight hundred".