140671630 has 32 divisors (see below), whose sum is σ = 290770560. Its totient is φ = 48460320.

The previous prime is 140671627. The next prime is 140671639. The reversal of 140671630 is 36176041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140671639) 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 15 ways as a sum of consecutive naturals, for example, 31564 + ... + 35743.

It is an arithmetic number, because the mean of its divisors is an integer number (9086580).

Almost surely, 2^140671630 is an apocalyptic number.

140671630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140671630 is an abundant number, since it is smaller than the sum of its proper divisors (150098930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140671630 is a wasteful number, since it uses less digits than its factorization.

140671630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67344.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 140671630 is about 11860.5071561042. The cubic root of 140671630 is about 520.0784275199.

The spelling of 140671630 in words is "one hundred forty million, six hundred seventy-one thousand, six hundred thirty".