72067788 has 36 divisors (see below), whose sum is σ = 196185808. Its totient is φ = 22174560.

The previous prime is 72067759. The next prime is 72067837. The reversal of 72067788 is 88776027.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76528 + ... + 77463.

Almost surely, 2^72067788 is an apocalyptic number.

72067788 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

72067788 is an abundant number, since it is smaller than the sum of its proper divisors (124118020).

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

72067788 is a wasteful number, since it uses less digits than its factorization.

72067788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154014 (or 154009 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 72067788 is about 8489.2748806951. The cubic root of 72067788 is about 416.1472835857.

The spelling of 72067788 in words is "seventy-two million, sixty-seven thousand, seven hundred eighty-eight".