50136780 has 96 divisors (see below), whose sum is σ = 149796864. Its totient is φ = 12500224.

The previous prime is 50136769. The next prime is 50136787. The reversal of 50136780 is 8763105.

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

It is not an unprimeable number, because it can be changed into a prime (50136787) 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, 64474 + ... + 65246.

It is an arithmetic number, because the mean of its divisors is an integer number (1560384).

Almost surely, 2^50136780 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 50136780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74898432).

50136780 is an abundant number, since it is smaller than the sum of its proper divisors (99660084).

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

50136780 is a wasteful number, since it uses less digits than its factorization.

50136780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 50136780 is about 7080.7330129020. The cubic root of 50136780 is about 368.7387785535.

Adding to 50136780 its reverse (8763105), we get a palindrome (58899885).

The spelling of 50136780 in words is "fifty million, one hundred thirty-six thousand, seven hundred eighty".