71269380 has 288 divisors, whose sum is σ = 281299200. Its totient is φ = 14183424.

The previous prime is 71269379. The next prime is 71269381. The reversal of 71269380 is 8396217.

It is an interprime number because it is at equal distance from previous prime (71269379) and next prime (71269381).

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

It is not an unprimeable number, because it can be changed into a prime (71269381) 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 95 ways as a sum of consecutive naturals, for example, 311106 + ... + 311334.

Almost surely, 2^71269380 is an apocalyptic number.

71269380 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 71269380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140649600).

71269380 is an abundant number, since it is smaller than the sum of its proper divisors (210029820).

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

71269380 is a wasteful number, since it uses less digits than its factorization.

71269380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 71269380 is about 8442.1194021407. The cubic root of 71269380 is about 414.6048011128.

The spelling of 71269380 in words is "seventy-one million, two hundred sixty-nine thousand, three hundred eighty".