140639070 has 64 divisors (see below), whose sum is σ = 396555264. Its totient is φ = 31470720.

The previous prime is 140639069. The next prime is 140639077. The reversal of 140639070 is 70936041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140639077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12102 + ... + 20681.

It is an arithmetic number, because the mean of its divisors is an integer number (6196176).

Almost surely, 2^140639070 is an apocalyptic number.

140639070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140639070 is an abundant number, since it is smaller than the sum of its proper divisors (255916194).

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

140639070 is a wasteful number, since it uses less digits than its factorization.

140639070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32817.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 140639070 is about 11859.1344540822. The cubic root of 140639070 is about 520.0382984613.

The spelling of 140639070 in words is "one hundred forty million, six hundred thirty-nine thousand, seventy".