73481040 has 80 divisors (see below), whose sum is σ = 253108800. Its totient is φ = 19594368.

The previous prime is 73481033. The next prime is 73481047. The reversal of 73481040 is 4018437.

It is an interprime number because it is at equal distance from previous prime (73481033) and next prime (73481047).

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 73480995 and 73481013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73481047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14850 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (3163860).

Almost surely, 2^73481040 is an apocalyptic number.

It is an amenable number.

73481040 is an abundant number, since it is smaller than the sum of its proper divisors (179627760).

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

73481040 is a wasteful number, since it uses less digits than its factorization.

73481040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34041 (or 34029 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 73481040 is about 8572.1082587658. The cubic root of 73481040 is about 418.8499148231.

Adding to 73481040 its reverse (4018437), we get a palindrome (77499477).

The spelling of 73481040 in words is "seventy-three million, four hundred eighty-one thousand, forty".