67448240 has 20 divisors (see below), whose sum is σ = 156817344. Its totient is φ = 26979264.

The previous prime is 67448237. The next prime is 67448257. The reversal of 67448240 is 4284476.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 67448240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421472 + ... + 421631.

Almost surely, 2^67448240 is an apocalyptic number.

It is an amenable number.

67448240 is an abundant number, since it is smaller than the sum of its proper divisors (89369104).

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

67448240 is a wasteful number, since it uses less digits than its factorization.

67448240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843116 (or 843110 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 67448240 is about 8212.6877451904. The cubic root of 67448240 is about 407.0585430943.

The spelling of 67448240 in words is "sixty-seven million, four hundred forty-eight thousand, two hundred forty".