71992650 has 24 divisors (see below), whose sum is σ = 178542144. Its totient is φ = 19198000.

The previous prime is 71992649. The next prime is 71992663. The reversal of 71992650 is 5629917.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71992599 and 71992608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239826 + ... + 240125.

It is an arithmetic number, because the mean of its divisors is an integer number (7439256).

Almost surely, 2^71992650 is an apocalyptic number.

71992650 is an abundant number, since it is smaller than the sum of its proper divisors (106549494).

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

71992650 is a wasteful number, since it uses less digits than its factorization.

71992650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479966 (or 479961 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 71992650 is about 8484.8482602814. The cubic root of 71992650 is about 416.0026080026.

The spelling of 71992650 in words is "seventy-one million, nine hundred ninety-two thousand, six hundred fifty".