74842236 has 144 divisors (see below), whose sum is σ = 226437120. Its totient is φ = 20401920.

The previous prime is 74842223. The next prime is 74842241. The reversal of 74842236 is 63224847.

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

Its product of digits (64512) is a multiple of the sum of its prime factors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 74842236.

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 47 ways as a sum of consecutive naturals, for example, 840880 + ... + 840968.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^74842236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74842236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

74842236 is an abundant number, since it is smaller than the sum of its proper divisors (151594884).

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

74842236 is a wasteful number, since it uses less digits than its factorization.

74842236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 219 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 74842236 is about 8651.1407340304. The cubic root of 74842236 is about 421.4204288272.

It can be divided in two parts, 74842 and 236, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 74842236 in words is "seventy-four million, eight hundred forty-two thousand, two hundred thirty-six".