71872427 has 6 divisors (see below), whose sum is σ = 79000404. Its totient is φ = 65338460.

The previous prime is 71872417. The next prime is 71872429. The reversal of 71872427 is 72427817.

It is a happy number.

It is not a de Polignac number, because 71872427 - 2¹⁰ = 71871403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71872429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296873 + ... + 297114.

It is an arithmetic number, because the mean of its divisors is an integer number (13166734).

Almost surely, 2^71872427 is an apocalyptic number.

71872427 is a deficient number, since it is larger than the sum of its proper divisors (7127977).

71872427 is a wasteful number, since it uses less digits than its factorization.

71872427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594009 (or 593998 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 71872427 is about 8477.7607302872. The cubic root of 71872427 is about 415.7709132999.

The spelling of 71872427 in words is "seventy-one million, eight hundred seventy-two thousand, four hundred twenty-seven".