74454840 has 48 divisors (see below), whose sum is σ = 241979400. Its totient is φ = 19854528.

The previous prime is 74454833. The next prime is 74454847. The reversal of 74454840 is 4845447.

74454840 is a `hidden beast` number, since 74 + 4 + 548 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (74454833) and next prime (74454847).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 74454795 and 74454804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74454847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103050 + ... + 103769.

Almost surely, 2^74454840 is an apocalyptic number.

It is an amenable number.

74454840 is an abundant number, since it is smaller than the sum of its proper divisors (167524560).

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

74454840 is a wasteful number, since it uses less digits than its factorization.

74454840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206836 (or 206829 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 74454840 is about 8628.7218056906. The cubic root of 74454840 is about 420.6920563146.

The spelling of 74454840 in words is "seventy-four million, four hundred fifty-four thousand, eight hundred forty".