137440306 has 8 divisors (see below), whose sum is σ = 206244144. Its totient is φ = 68692260.

The previous prime is 137440301. The next prime is 137440327. The reversal of 137440306 is 603044731.

137440306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (137440301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7120 + ... + 18043.

It is an arithmetic number, because the mean of its divisors is an integer number (25780518).

Almost surely, 2^137440306 is an apocalyptic number.

137440306 is a deficient number, since it is larger than the sum of its proper divisors (68803838).

137440306 is a wasteful number, since it uses less digits than its factorization.

137440306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27896.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 137440306 is about 11723.4937625266. The cubic root of 137440306 is about 516.0653548813.

The spelling of 137440306 in words is "one hundred thirty-seven million, four hundred forty thousand, three hundred six".