340623820 has 24 divisors (see below), whose sum is σ = 717351264. Its totient is φ = 135860736.

The previous prime is 340623799. The next prime is 340623823. The reversal of 340623820 is 28326043.

It is not an unprimeable number, because it can be changed into a prime (340623823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17064 + ... + 31183.

It is an arithmetic number, because the mean of its divisors is an integer number (29889636).

Almost surely, 2^340623820 is an apocalyptic number.

It is an amenable number.

340623820 is an abundant number, since it is smaller than the sum of its proper divisors (376727444).

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

340623820 is a wasteful number, since it uses less digits than its factorization.

340623820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48609 (or 48607 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 340623820 is about 18455.9968573903. The cubic root of 340623820 is about 698.3798038629.

Adding to 340623820 its reverse (28326043), we get a palindrome (368949863).

The spelling of 340623820 in words is "three hundred forty million, six hundred twenty-three thousand, eight hundred twenty".