71389480 has 16 divisors (see below), whose sum is σ = 160626420. Its totient is φ = 28555776.

The previous prime is 71389471. The next prime is 71389499. The reversal of 71389480 is 8498317.

It can be written as a sum of positive squares in 2 ways, for example, as 67996516 + 3392964 = 8246^2 + 1842^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1784737 = 71389480 / (7 + 1 + 3 + 8 + 9 + 4 + 8 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892329 + ... + 892408.

Almost surely, 2^71389480 is an apocalyptic number.

It is an amenable number.

71389480 is an abundant number, since it is smaller than the sum of its proper divisors (89236940).

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

71389480 is a wasteful number, since it uses less digits than its factorization.

71389480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784748 (or 1784744 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 71389480 is about 8449.2295506750. The cubic root of 71389480 is about 414.8375616266.

The spelling of 71389480 in words is "seventy-one million, three hundred eighty-nine thousand, four hundred eighty".