137206738 has 8 divisors (see below), whose sum is σ = 206070732. Its totient is φ = 68516496.

The previous prime is 137206723. The next prime is 137206739. The reversal of 137206738 is 837602731.

137206738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136118889 + 1087849 = 11667^2 + 1043^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 137206697 and 137206706.

It is not an unprimeable number, because it can be changed into a prime (137206739) 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, 41445 + ... + 44632.

Almost surely, 2^137206738 is an apocalyptic number.

137206738 is a deficient number, since it is larger than the sum of its proper divisors (68863994).

137206738 is an equidigital number, since it uses as much as digits as its factorization.

137206738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86876.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 137206738 is about 11713.5279911733. The cubic root of 137206738 is about 515.7728528702.

The spelling of 137206738 in words is "one hundred thirty-seven million, two hundred six thousand, seven hundred thirty-eight".