50640072 has 32 divisors (see below), whose sum is σ = 144686400. Its totient is φ = 14468544.

The previous prime is 50640071. The next prime is 50640077. The reversal of 50640072 is 27004605.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (50640071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150547 + ... + 150882.

It is an arithmetic number, because the mean of its divisors is an integer number (4521450).

Almost surely, 2^50640072 is an apocalyptic number.

It is an amenable number.

50640072 is an abundant number, since it is smaller than the sum of its proper divisors (94046328).

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

50640072 is a wasteful number, since it uses less digits than its factorization.

50640072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301445 (or 301441 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 50640072 is about 7116.1838087559. The cubic root of 50640072 is about 369.9685193572.

Adding to 50640072 its reverse (27004605), we get a palindrome (77644677).

The spelling of 50640072 in words is "fifty million, six hundred forty thousand, seventy-two".