74821406 has 32 divisors (see below), whose sum is σ = 125024256. Its totient is φ = 33300000.

The previous prime is 74821367. The next prime is 74821447. The reversal of 74821406 is 60412847.

It is a congruent number.

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, 335411 + ... + 335633.

It is an arithmetic number, because the mean of its divisors is an integer number (3907008).

Almost surely, 2^74821406 is an apocalyptic number.

74821406 is a deficient number, since it is larger than the sum of its proper divisors (50202850).

74821406 is a wasteful number, since it uses less digits than its factorization.

74821406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 74821406 is about 8649.9367627746. The cubic root of 74821406 is about 421.3813287927.

It can be divided in two parts, 7482 and 1406, that added together give a palindrome (8888).

The spelling of 74821406 in words is "seventy-four million, eight hundred twenty-one thousand, four hundred six".