72067776 has 56 divisors (see below), whose sum is σ = 208019904. Its totient is φ = 21838080.

The previous prime is 72067759. The next prime is 72067837. The reversal of 72067776 is 67776027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14950 + ... + 19173.

Almost surely, 2^72067776 is an apocalyptic number.

It is an amenable number.

72067776 is an abundant number, since it is smaller than the sum of its proper divisors (135952128).

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

72067776 is a wasteful number, since it uses less digits than its factorization.

72067776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34149 (or 34139 counting only the distinct ones).

The product of its (nonzero) digits is 172872, while the sum is 42.

The square root of 72067776 is about 8489.2741739209. The cubic root of 72067776 is about 416.1472604882.

The spelling of 72067776 in words is "seventy-two million, sixty-seven thousand, seven hundred seventy-six".