73478740 has 12 divisors (see below), whose sum is σ = 154305396. Its totient is φ = 29391488.

The previous prime is 73478737. The next prime is 73478747. The reversal of 73478740 is 4787437.

It can be written as a sum of positive squares in 2 ways, for example, as 34715664 + 38763076 = 5892^2 + 6226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73478693 and 73478702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73478747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836949 + ... + 1836988.

It is an arithmetic number, because the mean of its divisors is an integer number (12858783).

Almost surely, 2^73478740 is an apocalyptic number.

It is an amenable number.

73478740 is an abundant number, since it is smaller than the sum of its proper divisors (80826656).

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

73478740 is a wasteful number, since it uses less digits than its factorization.

73478740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673946 (or 3673944 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 73478740 is about 8571.9741016874. The cubic root of 73478740 is about 418.8455446941.

The spelling of 73478740 in words is "seventy-three million, four hundred seventy-eight thousand, seven hundred forty".