67128090 has 32 divisors (see below), whose sum is σ = 161701056. Its totient is φ = 17834880.

The previous prime is 67128077. The next prime is 67128091. The reversal of 67128090 is 9082176.

It is not an unprimeable number, because it can be changed into a prime (67128091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4449 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (5053158).

Almost surely, 2^67128090 is an apocalyptic number.

67128090 is an abundant number, since it is smaller than the sum of its proper divisors (94572966).

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

67128090 is a wasteful number, since it uses less digits than its factorization.

67128090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8254.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 67128090 is about 8193.1733778799. The cubic root of 67128090 is about 406.4134729876.

The spelling of 67128090 in words is "sixty-seven million, one hundred twenty-eight thousand, ninety".