340362640 has 80 divisors (see below), whose sum is σ = 828804096. Its totient is φ = 129830400.

The previous prime is 340362629. The next prime is 340362643. The reversal of 340362640 is 46263043.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 340362599 and 340362608.

It is not an unprimeable number, because it can be changed into a prime (340362643) 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, 175114 + ... + 177046.

Almost surely, 2^340362640 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 340362640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414402048).

340362640 is an abundant number, since it is smaller than the sum of its proper divisors (488441456).

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

340362640 is a wasteful number, since it uses less digits than its factorization.

340362640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 340362640 is about 18448.9197515735. The cubic root of 340362640 is about 698.2012594133.

The spelling of 340362640 in words is "three hundred forty million, three hundred sixty-two thousand, six hundred forty".