140640472 has 32 divisors (see below), whose sum is σ = 302123520. Its totient is φ = 60124320.

The previous prime is 140640407. The next prime is 140640491. The reversal of 140640472 is 274046041.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 140640472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21223 + ... + 27049.

It is an arithmetic number, because the mean of its divisors is an integer number (9441360).

Almost surely, 2^140640472 is an apocalyptic number.

It is an amenable number.

140640472 is an abundant number, since it is smaller than the sum of its proper divisors (161483048).

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

140640472 is a wasteful number, since it uses less digits than its factorization.

140640472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 140640472 is about 11859.1935644883. The cubic root of 140640472 is about 520.0400265047.

The spelling of 140640472 in words is "one hundred forty million, six hundred forty thousand, four hundred seventy-two".