140394670 has 32 divisors (see below), whose sum is σ = 288163008. Its totient is φ = 48787968.

The previous prime is 140394649. The next prime is 140394679. The reversal of 140394670 is 76493041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140394679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29554 + ... + 33973.

It is an arithmetic number, because the mean of its divisors is an integer number (9005094).

Almost surely, 2^140394670 is an apocalyptic number.

140394670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140394670 is an abundant number, since it is smaller than the sum of its proper divisors (147768338).

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

140394670 is a wasteful number, since it uses less digits than its factorization.

140394670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63564.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 140394670 is about 11848.8256802098. The cubic root of 140394670 is about 519.7368861207.

The spelling of 140394670 in words is "one hundred forty million, three hundred ninety-four thousand, six hundred seventy".