240438290 has 8 divisors (see below), whose sum is σ = 432788940. Its totient is φ = 96175312.

The previous prime is 240438283. The next prime is 240438307. The reversal of 240438290 is 92834042.

It can be written as a sum of positive squares in 2 ways, for example, as 200987329 + 39450961 = 14177^2 + 6281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12021905 + ... + 12021924.

Almost surely, 2^240438290 is an apocalyptic number.

240438290 is a deficient number, since it is larger than the sum of its proper divisors (192350650).

240438290 is a wasteful number, since it uses less digits than its factorization.

240438290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24043836.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 240438290 is about 15506.0726813723. The cubic root of 240438290 is about 621.8245680675.

The spelling of 240438290 in words is "two hundred forty million, four hundred thirty-eight thousand, two hundred ninety".