340021352 has 64 divisors (see below), whose sum is σ = 741363840. Its totient is φ = 144486400.

The previous prime is 340021333. The next prime is 340021393. The reversal of 340021352 is 253120043.

It is a happy number.

It is a super-2 number, since 2×340021352² = 231229039631815808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249152 + ... + 250512.

It is an arithmetic number, because the mean of its divisors is an integer number (11583810).

Almost surely, 2^340021352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340021352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370681920).

340021352 is an abundant number, since it is smaller than the sum of its proper divisors (401342488).

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

340021352 is a wasteful number, since it uses less digits than its factorization.

340021352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 340021352 is about 18439.6678928879. The cubic root of 340021352 is about 697.9678148721.

Adding to 340021352 its reverse (253120043), we get a palindrome (593141395).

The spelling of 340021352 in words is "three hundred forty million, twenty-one thousand, three hundred fifty-two".