140694840 has 256 divisors, whose sum is σ = 551577600. Its totient is φ = 31449600.

The previous prime is 140694823. The next prime is 140694847. The reversal of 140694840 is 48496041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 140694795 and 140694804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140694847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153985 + ... + 154895.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^140694840 is an apocalyptic number.

140694840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140694840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275788800).

140694840 is an abundant number, since it is smaller than the sum of its proper divisors (410882760).

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

140694840 is a wasteful number, since it uses less digits than its factorization.

140694840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 140694840 is about 11861.4855730638. The cubic root of 140694840 is about 520.1070292512.

The spelling of 140694840 in words is "one hundred forty million, six hundred ninety-four thousand, eight hundred forty".