73518020 has 12 divisors (see below), whose sum is σ = 154387884. Its totient is φ = 29407200.

The previous prime is 73517989. The next prime is 73518031. The reversal of 73518020 is 2081537.

It can be written as a sum of positive squares in 2 ways, for example, as 44702596 + 28815424 = 6686^2 + 5368^2 .

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, 1837931 + ... + 1837970.

It is an arithmetic number, because the mean of its divisors is an integer number (12865657).

Almost surely, 2^73518020 is an apocalyptic number.

It is an amenable number.

73518020 is an abundant number, since it is smaller than the sum of its proper divisors (80869864).

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

73518020 is a wasteful number, since it uses less digits than its factorization.

73518020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675910 (or 3675908 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 73518020 is about 8574.2649830758. The cubic root of 73518020 is about 418.9201663793.

Adding to 73518020 its reverse (2081537), we get a palindrome (75599557).

The spelling of 73518020 in words is "seventy-three million, five hundred eighteen thousand, twenty".