73801840 has 120 divisors (see below), whose sum is σ = 203303952. Its totient is φ = 24837120.

The previous prime is 73801837. The next prime is 73801841. The reversal of 73801840 is 4810837.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73801841) 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, 262500 + ... + 262780.

Almost surely, 2^73801840 is an apocalyptic number.

73801840 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 73801840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101651976).

73801840 is an abundant number, since it is smaller than the sum of its proper divisors (129502112).

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

73801840 is a wasteful number, since it uses less digits than its factorization.

73801840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 73801840 is about 8590.7997299437. The cubic root of 73801840 is about 419.4585615697.

The spelling of 73801840 in words is "seventy-three million, eight hundred one thousand, eight hundred forty".