140276640 has 192 divisors, whose sum is σ = 512096256. Its totient is φ = 31613952.

The previous prime is 140276603. The next prime is 140276641. The reversal of 140276640 is 46672041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 140276598 and 140276607.

It is not an unprimeable number, because it can be changed into a prime (140276641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278629 + ... + 279131.

It is an arithmetic number, because the mean of its divisors is an integer number (2667168).

Almost surely, 2^140276640 is an apocalyptic number.

140276640 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 140276640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256048128).

140276640 is an abundant number, since it is smaller than the sum of its proper divisors (371819616).

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

140276640 is a wasteful number, since it uses less digits than its factorization.

140276640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 140276640 is about 11843.8439706035. The cubic root of 140276640 is about 519.5911974382.

The spelling of 140276640 in words is "one hundred forty million, two hundred seventy-six thousand, six hundred forty".