340987638 has 8 divisors (see below), whose sum is σ = 681975288. Its totient is φ = 113662544.

The previous prime is 340987613. The next prime is 340987639. The reversal of 340987638 is 836789043.

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

340987638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340987639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28415631 + ... + 28415642.

It is an arithmetic number, because the mean of its divisors is an integer number (85246911).

Almost surely, 2^340987638 is an apocalyptic number.

340987638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

340987638 is a wasteful number, since it uses less digits than its factorization.

340987638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56831278.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 340987638 is about 18465.8505896696. The cubic root of 340987638 is about 698.6283603062.

The spelling of 340987638 in words is "three hundred forty million, nine hundred eighty-seven thousand, six hundred thirty-eight".