320140454 has 16 divisors (see below), whose sum is σ = 499284000. Its totient is φ = 153768384.

The previous prime is 320140451. The next prime is 320140459. The reversal of 320140454 is 454041023.

It is a super-2 number, since 2×320140454² = 204979820574652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320140451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327 + ... + 25410.

It is an arithmetic number, because the mean of its divisors is an integer number (31205250).

Almost surely, 2^320140454 is an apocalyptic number.

320140454 is a deficient number, since it is larger than the sum of its proper divisors (179143546).

320140454 is a wasteful number, since it uses less digits than its factorization.

320140454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27967.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 320140454 is about 17892.4691979615. The cubic root of 320140454 is about 684.0904361004.

Adding to 320140454 its reverse (454041023), we get a palindrome (774181477).

The spelling of 320140454 in words is "three hundred twenty million, one hundred forty thousand, four hundred fifty-four".