454690640 has 40 divisors (see below), whose sum is σ = 1091263488. Its totient is φ = 176008320.

The previous prime is 454690631. The next prime is 454690667. The reversal of 454690640 is 46096454.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 454690594 and 454690603.

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, 89192 + ... + 94151.

Almost surely, 2^454690640 is an apocalyptic number.

454690640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

454690640 is an abundant number, since it is smaller than the sum of its proper divisors (636572848).

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

454690640 is a wasteful number, since it uses less digits than its factorization.

454690640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183387 (or 183381 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 454690640 is about 21323.4762644368. The cubic root of 454690640 is about 768.9628133576.

The spelling of 454690640 in words is "four hundred fifty-four million, six hundred ninety thousand, six hundred forty".