72128050 has 24 divisors (see below), whose sum is σ = 134924400. Its totient is φ = 28686480.

The previous prime is 72127997. The next prime is 72128051. The reversal of 72128050 is 5082127.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (72128051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4921 + ... + 12979.

It is an arithmetic number, because the mean of its divisors is an integer number (5621850).

Almost surely, 2^72128050 is an apocalyptic number.

72128050 is a deficient number, since it is larger than the sum of its proper divisors (62796350).

72128050 is a wasteful number, since it uses less digits than its factorization.

72128050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250 (or 8245 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 72128050 is about 8492.8234410001. The cubic root of 72128050 is about 416.2632433029.

The spelling of 72128050 in words is "seventy-two million, one hundred twenty-eight thousand, fifty".