73113840 has 120 divisors (see below), whose sum is σ = 254702448. Its totient is φ = 19491840.

The previous prime is 73113839. The next prime is 73113869. The reversal of 73113840 is 4831137.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (27) 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17560 + ... + 21320.

Almost surely, 2^73113840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73113840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127351224).

73113840 is an abundant number, since it is smaller than the sum of its proper divisors (181588608).

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

73113840 is a wasteful number, since it uses less digits than its factorization.

73113840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789 (or 3771 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 73113840 is about 8550.6631321787. The cubic root of 73113840 is about 418.1510561092.

Adding to 73113840 its reverse (4831137), we get a palindrome (77944977).

The spelling of 73113840 in words is "seventy-three million, one hundred thirteen thousand, eight hundred forty".