73840380 has 48 divisors (see below), whose sum is σ = 213887520. Its totient is φ = 19011328.

The previous prime is 73840339. The next prime is 73840381. The reversal of 73840380 is 8304837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73840381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19479 + ... + 22958.

It is an arithmetic number, because the mean of its divisors is an integer number (4455990).

Almost surely, 2^73840380 is an apocalyptic number.

It is an amenable number.

73840380 is an abundant number, since it is smaller than the sum of its proper divisors (140047140).

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

73840380 is a wasteful number, since it uses less digits than its factorization.

73840380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42478 (or 42476 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 73840380 is about 8593.0425345159. The cubic root of 73840380 is about 419.5315639040.

The spelling of 73840380 in words is "seventy-three million, eight hundred forty thousand, three hundred eighty".