137740220 has 48 divisors (see below), whose sum is σ = 297047520. Its totient is φ = 53630976.

The previous prime is 137740217. The next prime is 137740231. The reversal of 137740220 is 22047731.

It is a self number, because there is not a number n which added to its sum of digits gives 137740220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132824 + ... + 133856.

It is an arithmetic number, because the mean of its divisors is an integer number (6188490).

Almost surely, 2^137740220 is an apocalyptic number.

137740220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137740220 is an abundant number, since it is smaller than the sum of its proper divisors (159307300).

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

137740220 is a wasteful number, since it uses less digits than its factorization.

137740220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 137740220 is about 11736.2779449023. The cubic root of 137740220 is about 516.4404578023.

Adding to 137740220 its reverse (22047731), we get a palindrome (159787951).

The spelling of 137740220 in words is "one hundred thirty-seven million, seven hundred forty thousand, two hundred twenty".