73806538 has 8 divisors (see below), whose sum is σ = 119225988. Its totient is φ = 34064544.

The previous prime is 73806529. The next prime is 73806539. The reversal of 73806538 is 83560837.

It can be written as a sum of positive squares in 2 ways, for example, as 72301009 + 1505529 = 8503^2 + 1227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73806538.

It is not an unprimeable number, because it can be changed into a prime (73806539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419331 + ... + 1419382.

Almost surely, 2^73806538 is an apocalyptic number.

73806538 is a deficient number, since it is larger than the sum of its proper divisors (45419450).

73806538 is a wasteful number, since it uses less digits than its factorization.

73806538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838728.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 73806538 is about 8591.0731576445. The cubic root of 73806538 is about 419.4674618650.

The spelling of 73806538 in words is "seventy-three million, eight hundred six thousand, five hundred thirty-eight".