73391472 has 120 divisors (see below), whose sum is σ = 256114560. Its totient is φ = 19059840.

The previous prime is 73391467. The next prime is 73391473. The reversal of 73391472 is 27419337.

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 nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73391473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7779 + ... + 14397.

It is an arithmetic number, because the mean of its divisors is an integer number (2134288).

Almost surely, 2^73391472 is an apocalyptic number.

73391472 is a gapful number since it is divisible by the number (72) 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 73391472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128057280).

73391472 is an abundant number, since it is smaller than the sum of its proper divisors (182723088).

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

73391472 is a wasteful number, since it uses less digits than its factorization.

73391472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651 (or 6642 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 73391472 is about 8566.8822800363. The cubic root of 73391472 is about 418.6796631844.

The spelling of 73391472 in words is "seventy-three million, three hundred ninety-one thousand, four hundred seventy-two".