138276348 has 24 divisors (see below), whose sum is σ = 368737152. Its totient is φ = 39507504.

The previous prime is 138276343. The next prime is 138276349. The reversal of 138276348 is 843672831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138276343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822990 + ... + 823157.

It is an arithmetic number, because the mean of its divisors is an integer number (15364048).

Almost surely, 2^138276348 is an apocalyptic number.

It is an amenable number.

138276348 is an abundant number, since it is smaller than the sum of its proper divisors (230460804).

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

138276348 is a wasteful number, since it uses less digits than its factorization.

138276348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646161 (or 1646159 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 138276348 is about 11759.0963938561. The cubic root of 138276348 is about 517.1096395716.

The spelling of 138276348 in words is "one hundred thirty-eight million, two hundred seventy-six thousand, three hundred forty-eight".