137278212 has 12 divisors (see below), whose sum is σ = 320315856. Its totient is φ = 45759400.

The previous prime is 137278201. The next prime is 137278217. The reversal of 137278212 is 212872731.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (137278217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5719914 + ... + 5719937.

It is an arithmetic number, because the mean of its divisors is an integer number (26692988).

Almost surely, 2^137278212 is an apocalyptic number.

137278212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

137278212 is an abundant number, since it is smaller than the sum of its proper divisors (183037644).

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

137278212 is a wasteful number, since it uses less digits than its factorization.

137278212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439858 (or 11439856 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 137278212 is about 11716.5785108111. The cubic root of 137278212 is about 515.8623964551.

The spelling of 137278212 in words is "one hundred thirty-seven million, two hundred seventy-eight thousand, two hundred twelve".