340420740 has 96 divisors (see below), whose sum is σ = 1043159040. Its totient is φ = 82262400.

The previous prime is 340420721. The next prime is 340420753. The reversal of 340420740 is 47024043.

It is a self number, because there is not a number n which added to its sum of digits gives 340420740.

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, 275925 + ... + 277155.

It is an arithmetic number, because the mean of its divisors is an integer number (10866240).

Almost surely, 2^340420740 is an apocalyptic number.

340420740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340420740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521579520).

340420740 is an abundant number, since it is smaller than the sum of its proper divisors (702738300).

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

340420740 is a wasteful number, since it uses less digits than its factorization.

340420740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 340420740 is about 18450.4943023216. The cubic root of 340420740 is about 698.2409848713.

Adding to 340420740 its reverse (47024043), we get a palindrome (387444783).

The spelling of 340420740 in words is "three hundred forty million, four hundred twenty thousand, seven hundred forty".