140728806 has 32 divisors (see below), whose sum is σ = 318038400. Its totient is φ = 46113480.

The previous prime is 140728787. The next prime is 140728807. The reversal of 140728806 is 608827041.

140728806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140728807) 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, 18900 + ... + 25271.

It is an arithmetic number, because the mean of its divisors is an integer number (9938700).

Almost surely, 2^140728806 is an apocalyptic number.

140728806 is an abundant number, since it is smaller than the sum of its proper divisors (177309594).

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

140728806 is a wasteful number, since it uses less digits than its factorization.

140728806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44241 (or 44235 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 140728806 is about 11862.9172634728. The cubic root of 140728806 is about 520.1488799543.

The spelling of 140728806 in words is "one hundred forty million, seven hundred twenty-eight thousand, eight hundred six".