101400388 has 12 divisors (see below), whose sum is σ = 177529212. Its totient is φ = 50677760.

The previous prime is 101400379. The next prime is 101400389. The reversal of 101400388 is 883004101.

It can be written as a sum of positive squares in 2 ways, for example, as 78818884 + 22581504 = 8878^2 + 4752^2 .

It is not an unprimeable number, because it can be changed into a prime (101400389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508 + ... + 16588.

It is an arithmetic number, because the mean of its divisors is an integer number (14794101).

Almost surely, 2^101400388 is an apocalyptic number.

It is an amenable number.

101400388 is a deficient number, since it is larger than the sum of its proper divisors (76128824).

101400388 is a wasteful number, since it uses less digits than its factorization.

101400388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11222 (or 11220 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 101400388 is about 10069.7759657303. The cubic root of 101400388 is about 466.3155224685.

Adding to 101400388 its reverse (883004101), we get a palindrome (984404489).

The spelling of 101400388 in words is "one hundred one million, four hundred thousand, three hundred eighty-eight".