74867820 has 24 divisors (see below), whose sum is σ = 209630064. Its totient is φ = 19964736.

The previous prime is 74867797. The next prime is 74867827. The reversal of 74867820 is 2876847.

It is not an unprimeable number, because it can be changed into a prime (74867827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623839 + ... + 623958.

It is an arithmetic number, because the mean of its divisors is an integer number (8734586).

Almost surely, 2^74867820 is an apocalyptic number.

It is an amenable number.

74867820 is an abundant number, since it is smaller than the sum of its proper divisors (134762244).

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

74867820 is a wasteful number, since it uses less digits than its factorization.

74867820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247809 (or 1247807 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 74867820 is about 8652.6192566182. The cubic root of 74867820 is about 421.4684426785.

The spelling of 74867820 in words is "seventy-four million, eight hundred sixty-seven thousand, eight hundred twenty".