140389020 has 36 divisors (see below), whose sum is σ = 425847240. Its totient is φ = 37437024.

The previous prime is 140389003. The next prime is 140389021. The reversal of 140389020 is 20983041.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140389021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389790 + ... + 390149.

It is an arithmetic number, because the mean of its divisors is an integer number (11829090).

Almost surely, 2^140389020 is an apocalyptic number.

140389020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140389020 is an abundant number, since it is smaller than the sum of its proper divisors (285458220).

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

140389020 is a wasteful number, since it uses less digits than its factorization.

140389020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779954 (or 779949 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 140389020 is about 11848.5872575594. The cubic root of 140389020 is about 519.7299139833.

The spelling of 140389020 in words is "one hundred forty million, three hundred eighty-nine thousand, twenty".