71740328 has 16 divisors (see below), whose sum is σ = 146741760. Its totient is φ = 32609200.

The previous prime is 71740321. The next prime is 71740343. The reversal of 71740328 is 82304717.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71740294 and 71740303.

It is not an unprimeable number, because it can be changed into a prime (71740321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407528 + ... + 407703.

It is an arithmetic number, because the mean of its divisors is an integer number (9171360).

Almost surely, 2^71740328 is an apocalyptic number.

It is an amenable number.

71740328 is an abundant number, since it is smaller than the sum of its proper divisors (75001432).

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

71740328 is a wasteful number, since it uses less digits than its factorization.

71740328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815248 (or 815244 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71740328 is about 8469.9662336989. The cubic root of 71740328 is about 415.5160329637.

The spelling of 71740328 in words is "seventy-one million, seven hundred forty thousand, three hundred twenty-eight".