138476770 has 16 divisors (see below), whose sum is σ = 255055680. Its totient is φ = 54102384.

The previous prime is 138476743. The next prime is 138476773. The reversal of 138476770 is 77674831.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (138476773) 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, 160590 + ... + 161449.

It is an arithmetic number, because the mean of its divisors is an integer number (15940980).

Almost surely, 2^138476770 is an apocalyptic number.

138476770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138476770 is a deficient number, since it is larger than the sum of its proper divisors (116578910).

138476770 is a wasteful number, since it uses less digits than its factorization.

138476770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322089.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 138476770 is about 11767.6153064247. The cubic root of 138476770 is about 517.3593571767.

The spelling of 138476770 in words is "one hundred thirty-eight million, four hundred seventy-six thousand, seven hundred seventy".