71622428 has 12 divisors (see below), whose sum is σ = 132712272. Its totient is φ = 33704640.

The previous prime is 71622413. The next prime is 71622461. The reversal of 71622428 is 82422617.

It is a junction number, because it is equal to n+sod(n) for n = 71622394 and 71622403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526568 + ... + 526703.

It is an arithmetic number, because the mean of its divisors is an integer number (11059356).

Almost surely, 2^71622428 is an apocalyptic number.

It is an amenable number.

71622428 is a deficient number, since it is larger than the sum of its proper divisors (61089844).

71622428 is a wasteful number, since it uses less digits than its factorization.

71622428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053292 (or 1053290 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 71622428 is about 8463.0034857608. The cubic root of 71622428 is about 415.2882847176.

The spelling of 71622428 in words is "seventy-one million, six hundred twenty-two thousand, four hundred twenty-eight".