74240028 has 18 divisors (see below), whose sum is σ = 187662384. Its totient is φ = 24746664.

The previous prime is 74239999. The next prime is 74240057. The reversal of 74240028 is 82004247.

It is an interprime number because it is at equal distance from previous prime (74239999) and next prime (74240057).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74239983 and 74240010.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1031076 + ... + 1031147.

It is an arithmetic number, because the mean of its divisors is an integer number (10425688).

Almost surely, 2^74240028 is an apocalyptic number.

It is an amenable number.

74240028 is an abundant number, since it is smaller than the sum of its proper divisors (113422356).

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

74240028 is a wasteful number, since it uses less digits than its factorization.

74240028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062233 (or 2062228 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 74240028 is about 8616.2653162493. The cubic root of 74240028 is about 420.2870826372.

The spelling of 74240028 in words is "seventy-four million, two hundred forty thousand, twenty-eight".