340403454 has 12 divisors (see below), whose sum is σ = 737540856. Its totient is φ = 113467812.

The previous prime is 340403429. The next prime is 340403477. The reversal of 340403454 is 454304043.

It is a super-2 number, since 2×340403454² = 231749022990260232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9455634 + ... + 9455669.

It is an arithmetic number, because the mean of its divisors is an integer number (61461738).

Almost surely, 2^340403454 is an apocalyptic number.

340403454 is an abundant number, since it is smaller than the sum of its proper divisors (397137402).

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

340403454 is a wasteful number, since it uses less digits than its factorization.

340403454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18911311 (or 18911308 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 340403454 is about 18450.0258536404. The cubic root of 340403454 is about 698.2291661652.

Adding to 340403454 its reverse (454304043), we get a palindrome (794707497).

The spelling of 340403454 in words is "three hundred forty million, four hundred three thousand, four hundred fifty-four".