67281396 has 48 divisors (see below), whose sum is σ = 193221504. Its totient is φ = 17744256.

The previous prime is 67281391. The next prime is 67281437. The reversal of 67281396 is 69318276.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67281391) 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, 29715 + ... + 31898.

It is an arithmetic number, because the mean of its divisors is an integer number (4025448).

Almost surely, 2^67281396 is an apocalyptic number.

It is an amenable number.

67281396 is an abundant number, since it is smaller than the sum of its proper divisors (125940108).

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

67281396 is a wasteful number, since it uses less digits than its factorization.

67281396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61640 (or 61638 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 67281396 is about 8202.5237579662. The cubic root of 67281396 is about 406.7226245074.

The spelling of 67281396 in words is "sixty-seven million, two hundred eighty-one thousand, three hundred ninety-six".