340728510 has 16 divisors (see below), whose sum is σ = 817748496. Its totient is φ = 90860928.

The previous prime is 340728499. The next prime is 340728527. The reversal of 340728510 is 15827043.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 11357617 = 340728510 / (3 + 4 + 0 + 7 + 2 + 8 + 5 + 1 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5678779 + ... + 5678838.

It is an arithmetic number, because the mean of its divisors is an integer number (51109281).

Almost surely, 2^340728510 is an apocalyptic number.

340728510 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

340728510 is an abundant number, since it is smaller than the sum of its proper divisors (477019986).

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

340728510 is a wasteful number, since it uses less digits than its factorization.

340728510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357627.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 340728510 is about 18458.8328450095. The cubic root of 340728510 is about 698.4513450453.

The spelling of 340728510 in words is "three hundred forty million, seven hundred twenty-eight thousand, five hundred ten".