74843780 has 48 divisors (see below), whose sum is σ = 177387840. Its totient is φ = 26275200.

The previous prime is 74843777. The next prime is 74843807. The reversal of 74843780 is 8734847.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (3695580).

Almost surely, 2^74843780 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 74843780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88693920).

74843780 is an abundant number, since it is smaller than the sum of its proper divisors (102544060).

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

74843780 is a wasteful number, since it uses less digits than its factorization.

74843780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11780 (or 11778 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 74843780 is about 8651.2299703568. The cubic root of 74843780 is about 421.4233267839.

The spelling of 74843780 in words is "seventy-four million, eight hundred forty-three thousand, seven hundred eighty".