454021660 has 24 divisors (see below), whose sum is σ = 984203136. Its totient is φ = 175750080.

The previous prime is 454021639. The next prime is 454021661. The reversal of 454021660 is 66120454.

It is a super-2 number, since 2×454021660² = 412271335498311200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454021661) 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, 365527 + ... + 366766.

It is an arithmetic number, because the mean of its divisors is an integer number (41008464).

Almost surely, 2^454021660 is an apocalyptic number.

It is an amenable number.

454021660 is an abundant number, since it is smaller than the sum of its proper divisors (530181476).

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

454021660 is a wasteful number, since it uses less digits than its factorization.

454021660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732333 (or 732331 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 454021660 is about 21307.7840236849. The cubic root of 454021660 is about 768.5855068326.

The spelling of 454021660 in words is "four hundred fifty-four million, twenty-one thousand, six hundred sixty".