7137738 has 12 divisors (see below), whose sum is σ = 15465138. Its totient is φ = 2379240.

The previous prime is 7137737. The next prime is 7137743. The reversal of 7137738 is 8377317.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3908529 + 3229209 = 1977^2 + 1797^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7137733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198253 + ... + 198288.

Almost surely, 2^7137738 is an apocalyptic number.

7137738 is an abundant number, since it is smaller than the sum of its proper divisors (8327400).

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

7137738 is a wasteful number, since it uses less digits than its factorization.

7137738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396549 (or 396546 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 7137738 is about 2671.6545435366. The cubic root of 7137738 is about 192.5396601255.

It can be divided in two parts, 7137 and 738, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 7137738 in words is "seven million, one hundred thirty-seven thousand, seven hundred thirty-eight".