67028040 has 128 divisors (see below), whose sum is σ = 227836800. Its totient is φ = 17521920.

The previous prime is 67028023. The next prime is 67028041. The reversal of 67028040 is 4082076.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 67027995 and 67028013.

It is not an unprimeable number, because it can be changed into a prime (67028041) 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, 56655 + ... + 57825.

It is an arithmetic number, because the mean of its divisors is an integer number (1779975).

Almost surely, 2^67028040 is an apocalyptic number.

67028040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67028040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113918400).

67028040 is an abundant number, since it is smaller than the sum of its proper divisors (160808760).

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

67028040 is a wasteful number, since it uses less digits than its factorization.

67028040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 67028040 is about 8187.0654083133. The cubic root of 67028040 is about 406.2114617486.

The spelling of 67028040 in words is "sixty-seven million, twenty-eight thousand, forty".