71672416 has 24 divisors (see below), whose sum is σ = 147241584. Its totient is φ = 34277760.

The previous prime is 71672413. The next prime is 71672449. The reversal of 71672416 is 61427617.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71672411) 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, 47955 + ... + 49426.

It is an arithmetic number, because the mean of its divisors is an integer number (6135066).

Almost surely, 2^71672416 is an apocalyptic number.

It is an amenable number.

71672416 is an abundant number, since it is smaller than the sum of its proper divisors (75569168).

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

71672416 is a wasteful number, since it uses less digits than its factorization.

71672416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97414 (or 97406 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 71672416 is about 8465.9562956585. The cubic root of 71672416 is about 415.3848773802.

The spelling of 71672416 in words is "seventy-one million, six hundred seventy-two thousand, four hundred sixteen".