71622380 has 24 divisors (see below), whose sum is σ = 154473648. Its totient is φ = 27874368.

The previous prime is 71622379. The next prime is 71622403. The reversal of 71622380 is 8322617.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47654 + ... + 49133.

It is an arithmetic number, because the mean of its divisors is an integer number (6436402).

Almost surely, 2^71622380 is an apocalyptic number.

It is an amenable number.

71622380 is an abundant number, since it is smaller than the sum of its proper divisors (82851268).

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

71622380 is a wasteful number, since it uses less digits than its factorization.

71622380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96833 (or 96831 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 71622380 is about 8463.0006498877. Note that the first 3 decimals coincide. The cubic root of 71622380 is about 415.2881919448.

Adding to 71622380 its reverse (8322617), we get a palindrome (79944997).

The spelling of 71622380 in words is "seventy-one million, six hundred twenty-two thousand, three hundred eighty".