67222540 has 48 divisors (see below), whose sum is σ = 176004864. Its totient is φ = 20952000.

The previous prime is 67222531. The next prime is 67222541. The reversal of 67222540 is 4522276.

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

It is a junction number, because it is equal to n+sod(n) for n = 67222499 and 67222508.

It is not an unprimeable number, because it can be changed into a prime (67222541) 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, 20286 + ... + 23365.

It is an arithmetic number, because the mean of its divisors is an integer number (3666768).

Almost surely, 2^67222540 is an apocalyptic number.

It is an amenable number.

67222540 is an abundant number, since it is smaller than the sum of its proper divisors (108782324).

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

67222540 is a wasteful number, since it uses less digits than its factorization.

67222540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43678 (or 43676 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 67222540 is about 8198.9352967321. The cubic root of 67222540 is about 406.6039931484.

The spelling of 67222540 in words is "sixty-seven million, two hundred twenty-two thousand, five hundred forty".