50323440 has 80 divisors (see below), whose sum is σ = 156739968. Its totient is φ = 13356288.

The previous prime is 50323411. The next prime is 50323463. The reversal of 50323440 is 4432305.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×50323440² = 5064897226867200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73339 + ... + 74021.

Almost surely, 2^50323440 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 50323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78369984).

50323440 is an abundant number, since it is smaller than the sum of its proper divisors (106416528).

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

50323440 is a wasteful number, since it uses less digits than its factorization.

50323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 50323440 is about 7093.9016063095. The cubic root of 50323440 is about 369.1958185400.

Adding to 50323440 its reverse (4432305), we get a palindrome (54755745).

The spelling of 50323440 in words is "fifty million, three hundred twenty-three thousand, four hundred forty".