71201340 has 72 divisors (see below), whose sum is σ = 246835680. Its totient is φ = 16274304.

The previous prime is 71201329. The next prime is 71201371. The reversal of 71201340 is 4310217.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26995 + ... + 29514.

Almost surely, 2^71201340 is an apocalyptic number.

71201340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71201340 is an abundant number, since it is smaller than the sum of its proper divisors (175634340).

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

71201340 is a wasteful number, since it uses less digits than its factorization.

71201340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56531 (or 56526 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 71201340 is about 8438.0886461331. The cubic root of 71201340 is about 414.4728197364.

Adding to 71201340 its reverse (4310217), we get a palindrome (75511557).

The spelling of 71201340 in words is "seventy-one million, two hundred one thousand, three hundred forty".