240633820 has 48 divisors (see below), whose sum is σ = 602638848. Its totient is φ = 78914880.

The previous prime is 240633773. The next prime is 240633821. The reversal of 240633820 is 28336042.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240633821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34146 + ... + 40585.

It is an arithmetic number, because the mean of its divisors is an integer number (12554976).

Almost surely, 2^240633820 is an apocalyptic number.

240633820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240633820 is an abundant number, since it is smaller than the sum of its proper divisors (362005028).

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

240633820 is a wasteful number, since it uses less digits than its factorization.

240633820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74770 (or 74768 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 240633820 is about 15512.3763492252. The cubic root of 240633820 is about 621.9930831211.

Adding to 240633820 its reverse (28336042), we get a palindrome (268969862).

The spelling of 240633820 in words is "two hundred forty million, six hundred thirty-three thousand, eight hundred twenty".