138954600 has 288 divisors, whose sum is σ = 522288000. Its totient is φ = 32901120.

The previous prime is 138954589. The next prime is 138954623. The reversal of 138954600 is 6459831.

It is a super-2 number, since 2×138954600² = 38616761722320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 581281 + ... + 581519.

It is an arithmetic number, because the mean of its divisors is an integer number (1813500).

Almost surely, 2^138954600 is an apocalyptic number.

138954600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138954600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261144000).

138954600 is an abundant number, since it is smaller than the sum of its proper divisors (383333400).

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

138954600 is a wasteful number, since it uses less digits than its factorization.

138954600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 138954600 is about 11787.9005764385. The cubic root of 138954600 is about 517.9537433290.

The spelling of 138954600 in words is "one hundred thirty-eight million, nine hundred fifty-four thousand, six hundred".