340038690 has 64 divisors (see below), whose sum is σ = 849346560. Its totient is φ = 87030720.

The previous prime is 340038683. The next prime is 340038731. The reversal of 340038690 is 96830043.

It is a super-2 number, since 2×340038690² = 231252621393832200, which contains 22 as substring.

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, 116671 + ... + 119549.

It is an arithmetic number, because the mean of its divisors is an integer number (13271040).

Almost surely, 2^340038690 is an apocalyptic number.

340038690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 340038690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424673280).

340038690 is an abundant number, since it is smaller than the sum of its proper divisors (509307870).

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

340038690 is a wasteful number, since it uses less digits than its factorization.

340038690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 340038690 is about 18440.1380146679. The cubic root of 340038690 is about 697.9796780098.

The spelling of 340038690 in words is "three hundred forty million, thirty-eight thousand, six hundred ninety".