240747780 has 144 divisors (see below), whose sum is σ = 844603200. Its totient is φ = 50787072.

The previous prime is 240747769. The next prime is 240747791. The reversal of 240747780 is 87747042.

It is an interprime number because it is at equal distance from previous prime (240747769) and next prime (240747791).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35071 + ... + 41369.

It is an arithmetic number, because the mean of its divisors is an integer number (5865300).

Almost surely, 2^240747780 is an apocalyptic number.

240747780 is a gapful number since it is divisible by the number (20) 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 240747780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422301600).

240747780 is an abundant number, since it is smaller than the sum of its proper divisors (603855420).

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

240747780 is a wasteful number, since it uses less digits than its factorization.

240747780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 240747780 is about 15516.0491105178. The cubic root of 240747780 is about 622.0912560008.

The spelling of 240747780 in words is "two hundred forty million, seven hundred forty-seven thousand, seven hundred eighty".