73820836 has 6 divisors (see below), whose sum is σ = 129186470. Its totient is φ = 36910416.

The previous prime is 73820807. The next prime is 73820837. The reversal of 73820836 is 63802837.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 5262436 = 8280^2 + 2294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73820795 and 73820804.

It is not an unprimeable number, because it can be changed into a prime (73820837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9227601 + ... + 9227608.

Almost surely, 2^73820836 is an apocalyptic number.

It is an amenable number.

73820836 is a deficient number, since it is larger than the sum of its proper divisors (55365634).

73820836 is a wasteful number, since it uses less digits than its factorization.

73820836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18455213 (or 18455211 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 73820836 is about 8591.9052601853. The cubic root of 73820836 is about 419.4945469024.

It can be divided in two parts, 7382083 and 6, that added together give a square (7382089 = 2717²).

The spelling of 73820836 in words is "seventy-three million, eight hundred twenty thousand, eight hundred thirty-six".