73497040 has 40 divisors (see below), whose sum is σ = 171272520. Its totient is φ = 29331456.

The previous prime is 73497037. The next prime is 73497077. The reversal of 73497040 is 4079437.

It can be written as a sum of positive squares in 4 ways, for example, as 1382976 + 72114064 = 1176^2 + 8492^2 .

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 = 73496987 and 73497005.

It is a congruent number.

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, 48616 + ... + 50104.

It is an arithmetic number, because the mean of its divisors is an integer number (4281813).

Almost surely, 2^73497040 is an apocalyptic number.

It is an amenable number.

73497040 is an abundant number, since it is smaller than the sum of its proper divisors (97775480).

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

73497040 is a wasteful number, since it uses less digits than its factorization.

With its successor (73497041) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2119).

73497040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 73497040 is about 8573.0414672974. The cubic root of 73497040 is about 418.8803131965.

The spelling of 73497040 in words is "seventy-three million, four hundred ninety-seven thousand, forty".