340272840 has 64 divisors (see below), whose sum is σ = 1030397760. Its totient is φ = 89888000.

The previous prime is 340272839. The next prime is 340272847. The reversal of 340272840 is 48272043.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 340272798 and 340272807.

It is not an unprimeable number, because it can be changed into a prime (340272847) 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, 411 + ... + 26090.

It is an arithmetic number, because the mean of its divisors is an integer number (16099965).

Almost surely, 2^340272840 is an apocalyptic number.

340272840 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 340272840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515198880).

340272840 is an abundant number, since it is smaller than the sum of its proper divisors (690124920).

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

340272840 is a wasteful number, since it uses less digits than its factorization.

340272840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26622 (or 26618 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 340272840 is about 18446.4858441927. The cubic root of 340272840 is about 698.1398504135.

The spelling of 340272840 in words is "three hundred forty million, two hundred seventy-two thousand, eight hundred forty".