71249814 has 32 divisors (see below), whose sum is σ = 165219840. Its totient is φ = 22716936.

The previous prime is 71249809. The next prime is 71249819. The reversal of 71249814 is 41894217.

It is an interprime number because it is at equal distance from previous prime (71249809) and next prime (71249819).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71249819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27442 + ... + 29925.

It is an arithmetic number, because the mean of its divisors is an integer number (5163120).

Almost surely, 2^71249814 is an apocalyptic number.

71249814 is an abundant number, since it is smaller than the sum of its proper divisors (93970026).

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

71249814 is a wasteful number, since it uses less digits than its factorization.

71249814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57401 (or 57395 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 71249814 is about 8440.9604903707. The cubic root of 71249814 is about 414.5668563460.

The spelling of 71249814 in words is "seventy-one million, two hundred forty-nine thousand, eight hundred fourteen".