73710020 has 12 divisors (see below), whose sum is σ = 154791084. Its totient is φ = 29484000.

The previous prime is 73710017. The next prime is 73710037. The reversal of 73710020 is 2001737.

It can be written as a sum of positive squares in 2 ways, for example, as 25240576 + 48469444 = 5024^2 + 6962^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3685501 = 73710020 / (7 + 3 + 7 + 1 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 73709974 and 73710001.

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, 1842731 + ... + 1842770.

It is an arithmetic number, because the mean of its divisors is an integer number (12899257).

Almost surely, 2^73710020 is an apocalyptic number.

It is an amenable number.

73710020 is an abundant number, since it is smaller than the sum of its proper divisors (81081064).

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

73710020 is a wasteful number, since it uses less digits than its factorization.

73710020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685510 (or 3685508 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 73710020 is about 8585.4539775134. The cubic root of 73710020 is about 419.2845339811.

Adding to 73710020 its reverse (2001737), we get a palindrome (75711757).

The spelling of 73710020 in words is "seventy-three million, seven hundred ten thousand, twenty".