73921856 has 112 divisors (see below), whose sum is σ = 166786560. Its totient is φ = 32348160.

The previous prime is 73921853. The next prime is 73921871. The reversal of 73921856 is 65812937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73921853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1394726 + ... + 1394778.

Almost surely, 2^73921856 is an apocalyptic number.

73921856 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 73921856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83393280).

73921856 is an abundant number, since it is smaller than the sum of its proper divisors (92864704).

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

73921856 is a wasteful number, since it uses less digits than its factorization.

73921856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 142 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 73921856 is about 8597.7820395728. The cubic root of 73921856 is about 419.6858118881.

The spelling of 73921856 in words is "seventy-three million, nine hundred twenty-one thousand, eight hundred fifty-six".