340532220 has 48 divisors (see below), whose sum is σ = 1089704448. Its totient is φ = 77835840.

The previous prime is 340532209. The next prime is 340532221. The reversal of 340532220 is 22235043.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340532221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404976 + ... + 405815.

It is an arithmetic number, because the mean of its divisors is an integer number (22702176).

Almost surely, 2^340532220 is an apocalyptic number.

340532220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

340532220 is an abundant number, since it is smaller than the sum of its proper divisors (749172228).

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

340532220 is a wasteful number, since it uses less digits than its factorization.

340532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810810 (or 810808 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 340532220 is about 18453.5151123031. The cubic root of 340532220 is about 698.3171958659.

Adding to 340532220 its reverse (22235043), we get a palindrome (362767263).

The spelling of 340532220 in words is "three hundred forty million, five hundred thirty-two thousand, two hundred twenty".