71478375 has 32 divisors (see below), whose sum is σ = 121867200. Its totient is φ = 37184000.

The previous prime is 71478371. The next prime is 71478383. The reversal of 71478375 is 57387417.

It is a happy number.

It is not a de Polignac number, because 71478375 - 2² = 71478371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71478371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13051 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (3808350).

Almost surely, 2^71478375 is an apocalyptic number.

71478375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71478375 is a deficient number, since it is larger than the sum of its proper divisors (50388825).

71478375 is a wasteful number, since it uses less digits than its factorization.

71478375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708 (or 4698 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 71478375 is about 8454.4884528870. The cubic root of 71478375 is about 415.0096770376.

The spelling of 71478375 in words is "seventy-one million, four hundred seventy-eight thousand, three hundred seventy-five".