71415830 has 16 divisors (see below), whose sum is σ = 128755440. Its totient is φ = 28520352.

The previous prime is 71415823. The next prime is 71415833. The reversal of 71415830 is 3851417.

It is a junction number, because it is equal to n+sod(n) for n = 71415793 and 71415802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71415833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (8047215).

Almost surely, 2^71415830 is an apocalyptic number.

71415830 is a deficient number, since it is larger than the sum of its proper divisors (57339610).

71415830 is a wasteful number, since it uses less digits than its factorization.

71415830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 71415830 is about 8450.7887205870. The cubic root of 71415830 is about 414.8885944732. Note that the first 3 decimals are identical.

The spelling of 71415830 in words is "seventy-one million, four hundred fifteen thousand, eight hundred thirty".