71933380 has 24 divisors (see below), whose sum is σ = 152066880. Its totient is φ = 28581600.

The previous prime is 71933377. The next prime is 71933401. The reversal of 71933380 is 8333917.

It is a super-2 number, since 2×71933380² = 10348822316448800, which contains 22 as substring.

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, 8890 + ... + 14929.

It is an arithmetic number, because the mean of its divisors is an integer number (6336120).

Almost surely, 2^71933380 is an apocalyptic number.

It is an amenable number.

71933380 is an abundant number, since it is smaller than the sum of its proper divisors (80133500).

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

71933380 is a wasteful number, since it uses less digits than its factorization.

71933380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23979 (or 23977 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 71933380 is about 8481.3548445988. The cubic root of 71933380 is about 415.8884146600. Note that the first 3 decimals are identical.

The spelling of 71933380 in words is "seventy-one million, nine hundred thirty-three thousand, three hundred eighty".