340628181 has 16 divisors (see below), whose sum is σ = 486182400. Its totient is φ = 211485168.

The previous prime is 340628173. The next prime is 340628203. The reversal of 340628181 is 181826043.

It is not a de Polignac number, because 340628181 - 2³ = 340628173 is a prime.

It is a super-2 number, since 2×340628181² = 232055115382737522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340628131) 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, 47281 + ... + 54006.

It is an arithmetic number, because the mean of its divisors is an integer number (30386400).

Almost surely, 2^340628181 is an apocalyptic number.

It is an amenable number.

340628181 is a deficient number, since it is larger than the sum of its proper divisors (145554219).

340628181 is a wasteful number, since it uses less digits than its factorization.

340628181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101368.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 340628181 is about 18456.1150028927. The cubic root of 340628181 is about 698.3827842978.

The spelling of 340628181 in words is "three hundred forty million, six hundred twenty-eight thousand, one hundred eighty-one".