71922040 has 16 divisors (see below), whose sum is σ = 161824680. Its totient is φ = 28768800.

The previous prime is 71922023. The next prime is 71922061. The reversal of 71922040 is 4022917.

It is a junction number, because it is equal to n+sod(n) for n = 71921996 and 71922014.

It is a congruent number.

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, 898986 + ... + 899065.

Almost surely, 2^71922040 is an apocalyptic number.

It is an amenable number.

71922040 is an abundant number, since it is smaller than the sum of its proper divisors (89902640).

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

71922040 is a wasteful number, since it uses less digits than its factorization.

71922040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798062 (or 1798058 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71922040 is about 8480.6862929836. The cubic root of 71922040 is about 415.8665591483.

Adding to 71922040 its reverse (4022917), we get a palindrome (75944957).

The spelling of 71922040 in words is "seventy-one million, nine hundred twenty-two thousand, forty".