67400628 has 12 divisors (see below), whose sum is σ = 157268160. Its totient is φ = 22466872.

The previous prime is 67400623. The next prime is 67400639. The reversal of 67400628 is 82600476.

67400628 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

67400628 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67400621) 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 3 ways as a sum of consecutive naturals, for example, 2808348 + ... + 2808371.

It is an arithmetic number, because the mean of its divisors is an integer number (13105680).

Almost surely, 2^67400628 is an apocalyptic number.

It is an amenable number.

67400628 is an abundant number, since it is smaller than the sum of its proper divisors (89867532).

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

67400628 is a wasteful number, since it uses less digits than its factorization.

67400628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616726 (or 5616724 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 67400628 is about 8209.7885478251. The cubic root of 67400628 is about 406.9627390946.

The spelling of 67400628 in words is "sixty-seven million, four hundred thousand, six hundred twenty-eight".