73395720 has 128 divisors (see below), whose sum is σ = 247968000. Its totient is φ = 19548864.

The previous prime is 73395677. The next prime is 73395779. The reversal of 73395720 is 2759337.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87061 + ... + 87899.

It is an arithmetic number, because the mean of its divisors is an integer number (1937250).

Almost surely, 2^73395720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73395720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123984000).

73395720 is an abundant number, since it is smaller than the sum of its proper divisors (174572280).

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

73395720 is an equidigital number, since it uses as much as digits as its factorization.

73395720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 73395720 is about 8567.1302079518. The cubic root of 73395720 is about 418.6877409481.

The spelling of 73395720 in words is "seventy-three million, three hundred ninety-five thousand, seven hundred twenty".