73447236 has 144 divisors (see below), whose sum is σ = 209751360. Its totient is φ = 22394880.

The previous prime is 73447223. The next prime is 73447237. The reversal of 73447236 is 63274437.

It is a happy number.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is a self number, because there is not a number n which added to its sum of digits gives 73447236.

It is not an unprimeable number, because it can be changed into a prime (73447237) 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 47 ways as a sum of consecutive naturals, for example, 757140 + ... + 757236.

Almost surely, 2^73447236 is an apocalyptic number.

73447236 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73447236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104875680).

73447236 is an abundant number, since it is smaller than the sum of its proper divisors (136304124).

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

73447236 is a wasteful number, since it uses less digits than its factorization.

73447236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 162 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 73447236 is about 8570.1362882979. The cubic root of 73447236 is about 418.7856761466.

The spelling of 73447236 in words is "seventy-three million, four hundred forty-seven thousand, two hundred thirty-six".