71497200 has 60 divisors (see below), whose sum is σ = 229033208. Its totient is φ = 19065600.

The previous prime is 71497177. The next prime is 71497201. The reversal of 71497200 is 279417.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×71497200² = 10223699215680000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71497201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28591 + ... + 30990.

Almost surely, 2^71497200 is an apocalyptic number.

It is an amenable number.

71497200 is an abundant number, since it is smaller than the sum of its proper divisors (157536008).

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

71497200 is a wasteful number, since it uses less digits than its factorization.

71497200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59602 (or 59591 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 71497200 is about 8455.6016935520. The cubic root of 71497200 is about 415.0461070367.

The spelling of 71497200 in words is "seventy-one million, four hundred ninety-seven thousand, two hundred".