73006820 has 12 divisors (see below), whose sum is σ = 153314364. Its totient is φ = 29202720.

The previous prime is 73006799. The next prime is 73006847. The reversal of 73006820 is 2860037.

It can be written as a sum of positive squares in 2 ways, for example, as 53699584 + 19307236 = 7328^2 + 4394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73006820.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825151 + ... + 1825190.

It is an arithmetic number, because the mean of its divisors is an integer number (12776197).

Almost surely, 2^73006820 is an apocalyptic number.

It is an amenable number.

73006820 is an abundant number, since it is smaller than the sum of its proper divisors (80307544).

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

73006820 is a wasteful number, since it uses less digits than its factorization.

73006820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650350 (or 3650348 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 73006820 is about 8544.4028463082. The cubic root of 73006820 is about 417.9469343439.

Adding to 73006820 its reverse (2860037), we get a palindrome (75866857).

The spelling of 73006820 in words is "seventy-three million, six thousand, eight hundred twenty".