73818120 has 32 divisors (see below), whose sum is σ = 221454720. Its totient is φ = 19684800.

The previous prime is 73818119. The next prime is 73818133. The reversal of 73818120 is 2181837.

It is a happy number.

It is a super-2 number, since 2×73818120² = 10898229680668800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307456 + ... + 307695.

It is an arithmetic number, because the mean of its divisors is an integer number (6920460).

Almost surely, 2^73818120 is an apocalyptic number.

It is an amenable number.

73818120 is an abundant number, since it is smaller than the sum of its proper divisors (147636600).

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

73818120 is a wasteful number, since it uses less digits than its factorization.

73818120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615165 (or 615161 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 73818120 is about 8591.7472029850. The cubic root of 73818120 is about 419.4894021889.

Adding to 73818120 its reverse (2181837), we get a palindrome (75999957).

The spelling of 73818120 in words is "seventy-three million, eight hundred eighteen thousand, one hundred twenty".