67150728 has 32 divisors (see below), whose sum is σ = 186530400. Its totient is φ = 22383504.

The previous prime is 67150723. The next prime is 67150751. The reversal of 67150728 is 82705176.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 67150692 and 67150701.

It is not an unprimeable number, because it can be changed into a prime (67150723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155226 + ... + 155657.

It is an arithmetic number, because the mean of its divisors is an integer number (5829075).

Almost surely, 2^67150728 is an apocalyptic number.

It is an amenable number.

67150728 is an abundant number, since it is smaller than the sum of its proper divisors (119379672).

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

67150728 is a wasteful number, since it uses less digits than its factorization.

67150728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310898 (or 310888 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 67150728 is about 8194.5547774116. The cubic root of 67150728 is about 406.4591535870.

The spelling of 67150728 in words is "sixty-seven million, one hundred fifty thousand, seven hundred twenty-eight".