140647628 has 24 divisors (see below), whose sum is σ = 269875200. Its totient is φ = 63605520.

The previous prime is 140647621. The next prime is 140647631. The reversal of 140647628 is 826746041.

It is a junction number, because it is equal to n+sod(n) for n = 140647591 and 140647600.

It is not an unprimeable number, because it can be changed into a prime (140647621) by changing a digit.

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, 725 + ... + 16787.

It is an arithmetic number, because the mean of its divisors is an integer number (11244800).

Almost surely, 2^140647628 is an apocalyptic number.

It is an amenable number.

140647628 is a deficient number, since it is larger than the sum of its proper divisors (129227572).

140647628 is a wasteful number, since it uses less digits than its factorization.

140647628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16277 (or 16275 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 140647628 is about 11859.4952675061. The cubic root of 140647628 is about 520.0488464962.

The spelling of 140647628 in words is "one hundred forty million, six hundred forty-seven thousand, six hundred twenty-eight".