240838204690 has 64 divisors (see below), whose sum is σ = 453495760128. Its totient is φ = 92025964800.

The previous prime is 240838204661. The next prime is 240838204889. The reversal of 240838204690 is 96402838042.

It is a super-2 number, since 2×240838204690² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240838204690.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2860272 + ... + 2943268.

It is an arithmetic number, because the mean of its divisors is an integer number (7085871252).

Almost surely, 2^240838204690 is an apocalyptic number.

240838204690 is a deficient number, since it is larger than the sum of its proper divisors (212657555438).

240838204690 is a wasteful number, since it uses less digits than its factorization.

240838204690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83203.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 240838204690 in words is "two hundred forty billion, eight hundred thirty-eight million, two hundred four thousand, six hundred ninety".