140628385 has 8 divisors (see below), whose sum is σ = 169968960. Its totient is φ = 111692784.

The previous prime is 140628373. The next prime is 140628391. The reversal of 140628385 is 583826041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140628385 - 2²³ = 132239777 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100477 + ... + 101866.

It is an arithmetic number, because the mean of its divisors is an integer number (21246120).

Almost surely, 2^140628385 is an apocalyptic number.

It is an amenable number.

140628385 is a deficient number, since it is larger than the sum of its proper divisors (29340575).

140628385 is a wasteful number, since it uses less digits than its factorization.

140628385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202487.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 140628385 is about 11858.6839489043. The cubic root of 140628385 is about 520.0251282236.

It can be divided in two parts, 1406 and 28385, that added together give a cube (29791 = 31³).

The spelling of 140628385 in words is "one hundred forty million, six hundred twenty-eight thousand, three hundred eighty-five".