140532690 has 32 divisors (see below), whose sum is σ = 342999360. Its totient is φ = 36839744.

The previous prime is 140532677. The next prime is 140532709. The reversal of 140532690 is 96235041.

It is a super-2 number, since 2×140532690² = 39498873917272200, which contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37929 + ... + 41468.

It is an arithmetic number, because the mean of its divisors is an integer number (10718730).

Almost surely, 2^140532690 is an apocalyptic number.

140532690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140532690 is an abundant number, since it is smaller than the sum of its proper divisors (202466670).

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

140532690 is a wasteful number, since it uses less digits than its factorization.

140532690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79466.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 140532690 is about 11854.6484553529. The cubic root of 140532690 is about 519.9071456491.

The spelling of 140532690 in words is "one hundred forty million, five hundred thirty-two thousand, six hundred ninety".