140186428 has 6 divisors (see below), whose sum is σ = 245326256. Its totient is φ = 70093212.

The previous prime is 140186413. The next prime is 140186429. The reversal of 140186428 is 824681041.

It is a junction number, because it is equal to n+sod(n) for n = 140186393 and 140186402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140186429) 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 as a sum of consecutive naturals, namely, 17523300 + ... + 17523307.

Almost surely, 2^140186428 is an apocalyptic number.

It is an amenable number.

140186428 is a deficient number, since it is larger than the sum of its proper divisors (105139828).

140186428 is a wasteful number, since it uses less digits than its factorization.

140186428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35046611 (or 35046609 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 140186428 is about 11840.0349661646. The cubic root of 140186428 is about 519.4797904052.

The spelling of 140186428 in words is "one hundred forty million, one hundred eighty-six thousand, four hundred twenty-eight".