50319390 has 64 divisors (see below), whose sum is σ = 132814080. Its totient is φ = 12099840.

The previous prime is 50319349. The next prime is 50319397. The reversal of 50319390 is 9391305.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50319397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45322 + ... + 46418.

It is an arithmetic number, because the mean of its divisors is an integer number (2075220).

Almost surely, 2^50319390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50319390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66407040).

50319390 is an abundant number, since it is smaller than the sum of its proper divisors (82494690).

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

50319390 is a wasteful number, since it uses less digits than its factorization.

50319390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 50319390 is about 7093.6161441115. The cubic root of 50319390 is about 369.1859140556.

The spelling of 50319390 in words is "fifty million, three hundred nineteen thousand, three hundred ninety".