140628634 has 8 divisors (see below), whose sum is σ = 211026240. Its totient is φ = 70286556.

The previous prime is 140628629. The next prime is 140628637. The reversal of 140628634 is 436826041.

140628634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 140628634.

It is not an unprimeable number, because it can be changed into a prime (140628637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6834 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (26378280).

Almost surely, 2^140628634 is an apocalyptic number.

140628634 is a deficient number, since it is larger than the sum of its proper divisors (70397606).

140628634 is a wasteful number, since it uses less digits than its factorization.

140628634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27764.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 140628634 is about 11858.6944475351. The cubic root of 140628634 is about 520.0254351464.

The spelling of 140628634 in words is "one hundred forty million, six hundred twenty-eight thousand, six hundred thirty-four".