138023476 has 24 divisors (see below), whose sum is σ = 257112576. Its totient is φ = 64606080.

The previous prime is 138023471. The next prime is 138023489. The reversal of 138023476 is 674320831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138023471) 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, 7675 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (10713024).

Almost surely, 2^138023476 is an apocalyptic number.

It is an amenable number.

138023476 is a deficient number, since it is larger than the sum of its proper divisors (119089100).

138023476 is a wasteful number, since it uses less digits than its factorization.

138023476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10839 (or 10837 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 138023476 is about 11748.3392868950. The cubic root of 138023476 is about 516.7942268922.

The spelling of 138023476 in words is "one hundred thirty-eight million, twenty-three thousand, four hundred seventy-six".