73842240 has 56 divisors (see below), whose sum is σ = 234452160. Its totient is φ = 19691008.

The previous prime is 73842229. The next prime is 73842253. The reversal of 73842240 is 4224837.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 73842198 and 73842207.

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, 37500 + ... + 39419.

Almost surely, 2^73842240 is an apocalyptic number.

It is an amenable number.

73842240 is an abundant number, since it is smaller than the sum of its proper divisors (160609920).

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

73842240 is a wasteful number, since it uses less digits than its factorization.

73842240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76939 (or 76929 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 73842240 is about 8593.1507609258. The cubic root of 73842240 is about 419.5350864669.

The spelling of 73842240 in words is "seventy-three million, eight hundred forty-two thousand, two hundred forty".