73573040 has 40 divisors (see below), whose sum is σ = 173479968. Its totient is φ = 29012480.

The previous prime is 73572953. The next prime is 73573051. The reversal of 73573040 is 4037537.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 73572994 and 73573012.

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, 797 + ... + 12156.

Almost surely, 2^73573040 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 73573040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86739984).

73573040 is an abundant number, since it is smaller than the sum of its proper divisors (99906928).

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

73573040 is a wasteful number, since it uses less digits than its factorization.

73573040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037 (or 13031 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 73573040 is about 8577.4728212918. The cubic root of 73573040 is about 419.0246452544.

The spelling of 73573040 in words is "seventy-three million, five hundred seventy-three thousand, forty".