73069920 has 288 divisors, whose sum is σ = 311351040. Its totient is φ = 15160320.

The previous prime is 73069903. The next prime is 73069921. The reversal of 73069920 is 2996037.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73069921) 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 47 ways as a sum of consecutive naturals, for example, 110551 + ... + 111209.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^73069920 is an apocalyptic number.

73069920 is a gapful number since it is divisible by the number (70) 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 73069920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155675520).

73069920 is an abundant number, since it is smaller than the sum of its proper divisors (238281120).

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

73069920 is a wasteful number, since it uses less digits than its factorization.

73069920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 73069920 is about 8548.0945245125. The cubic root of 73069920 is about 418.0673105740.

The spelling of 73069920 in words is "seventy-three million, sixty-nine thousand, nine hundred twenty".