140894640 has 200 divisors, whose sum is σ = 518538240. Its totient is φ = 35334144.

The previous prime is 140894629. The next prime is 140894641. The reversal of 140894640 is 46498041.

It is a happy number.

140894640 is a `hidden beast` number, since 1 + 4 + 0 + 8 + 9 + 4 + 640 = 666.

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 = 140894595 and 140894604.

It is not an unprimeable number, because it can be changed into a prime (140894641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 109521 + ... + 110799.

Almost surely, 2^140894640 is an apocalyptic number.

140894640 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 140894640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259269120).

140894640 is an abundant number, since it is smaller than the sum of its proper divisors (377643600).

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

140894640 is a wasteful number, since it uses less digits than its factorization.

140894640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1306 counting only the distinct ones).

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

The square root of 140894640 is about 11869.9048016402. The cubic root of 140894640 is about 520.3531132165.

The spelling of 140894640 in words is "one hundred forty million, eight hundred ninety-four thousand, six hundred forty".