80729750 has 16 divisors (see below), whose sum is σ = 151126560. Its totient is φ = 32291800.

The previous prime is 80729749. The next prime is 80729773. The reversal of 80729750 is 5792708.

It is a congruent 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, 161210 + ... + 161709.

It is an arithmetic number, because the mean of its divisors is an integer number (9445410).

Almost surely, 2^80729750 is an apocalyptic number.

80729750 is a deficient number, since it is larger than the sum of its proper divisors (70396810).

80729750 is a wasteful number, since it uses less digits than its factorization.

80729750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322936 (or 322926 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 80729750 is about 8984.9735670173. The cubic root of 80729750 is about 432.1931399464.

The spelling of 80729750 in words is "eighty million, seven hundred twenty-nine thousand, seven hundred fifty".