140893830 has 224 divisors, whose sum is σ = 475953408. Its totient is φ = 29160000.

The previous prime is 140893813. The next prime is 140893847. The reversal of 140893830 is 38398041.

140893830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140893813) and next prime (140893847).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 561205 + ... + 561455.

It is an arithmetic number, because the mean of its divisors is an integer number (2124792).

Almost surely, 2^140893830 is an apocalyptic number.

140893830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140893830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237976704).

140893830 is an abundant number, since it is smaller than the sum of its proper divisors (335059578).

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

140893830 is a wasteful number, since it uses less digits than its factorization.

140893830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 140893830 is about 11869.8706816882. The cubic root of 140893830 is about 520.3521160486.

The spelling of 140893830 in words is "one hundred forty million, eight hundred ninety-three thousand, eight hundred thirty".