340137020 has 24 divisors (see below), whose sum is σ = 756305424. Its totient is φ = 128051456.

The previous prime is 340137019. The next prime is 340137023. The reversal of 340137020 is 20731043.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 340136983 and 340137001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340137023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499862 + ... + 500541.

It is an arithmetic number, because the mean of its divisors is an integer number (31512726).

Almost surely, 2^340137020 is an apocalyptic number.

It is an amenable number.

340137020 is an abundant number, since it is smaller than the sum of its proper divisors (416168404).

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

340137020 is a wasteful number, since it uses less digits than its factorization.

340137020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000429 (or 1000427 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 340137020 is about 18442.8040167432. The cubic root of 340137020 is about 698.0469504793.

Adding to 340137020 its reverse (20731043), we get a palindrome (360868063).

The spelling of 340137020 in words is "three hundred forty million, one hundred thirty-seven thousand, twenty".