67842972 has 18 divisors (see below), whose sum is σ = 171492048. Its totient is φ = 22614312.

The previous prime is 67842967. The next prime is 67842989. The reversal of 67842972 is 27924876.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 942228 + ... + 942299.

It is an arithmetic number, because the mean of its divisors is an integer number (9527336).

Almost surely, 2^67842972 is an apocalyptic number.

It is an amenable number.

67842972 is an abundant number, since it is smaller than the sum of its proper divisors (103649076).

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

67842972 is a wasteful number, since it uses less digits than its factorization.

67842972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884537 (or 1884532 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 67842972 is about 8236.6845271626. The cubic root of 67842972 is about 407.8510846392.

The spelling of 67842972 in words is "sixty-seven million, eight hundred forty-two thousand, nine hundred seventy-two".