240263047640 has 128 divisors (see below), whose sum is σ = 709457702400. Its totient is φ = 70945735680.

The previous prime is 240263047637. The next prime is 240263047643. The reversal of 240263047640 is 46740362042.

It is an interprime number because it is at equal distance from previous prime (240263047637) and next prime (240263047643).

It is a super-2 number, since 2×240263047640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 240263047594 and 240263047603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240263047643) 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, 1994309 + ... + 2111348.

It is an arithmetic number, because the mean of its divisors is an integer number (5542638300).

Almost surely, 2^240263047640 is an apocalyptic number.

240263047640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240263047640 is an abundant number, since it is smaller than the sum of its proper divisors (469194654760).

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

240263047640 is a wasteful number, since it uses less digits than its factorization.

240263047640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105705 (or 4105701 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 38.

The spelling of 240263047640 in words is "two hundred forty billion, two hundred sixty-three million, forty-seven thousand, six hundred forty".