67402720 has 96 divisors (see below), whose sum is σ = 198567936. Its totient is φ = 21004800.

The previous prime is 67402717. The next prime is 67402733. The reversal of 67402720 is 2720476.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9585 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (2068416).

Almost surely, 2^67402720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67402720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99283968).

67402720 is an abundant number, since it is smaller than the sum of its proper divisors (131165216).

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

67402720 is a wasteful number, since it uses less digits than its factorization.

67402720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504 (or 5496 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 67402720 is about 8209.9159557209. The cubic root of 67402720 is about 406.9669495264.

The spelling of 67402720 in words is "sixty-seven million, four hundred two thousand, seven hundred twenty".