74436648 has 192 divisors, whose sum is σ = 234118080. Its totient is φ = 19430400.

The previous prime is 74436643. The next prime is 74436667. The reversal of 74436648 is 84663447.

It is not an unprimeable number, because it can be changed into a prime (74436643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1815508 + ... + 1815548.

It is an arithmetic number, because the mean of its divisors is an integer number (1219365).

Almost surely, 2^74436648 is an apocalyptic number.

74436648 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74436648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117059040).

74436648 is an abundant number, since it is smaller than the sum of its proper divisors (159681432).

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

74436648 is a wasteful number, since it uses less digits than its factorization.

74436648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 93 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 74436648 is about 8627.6675874769. The cubic root of 74436648 is about 420.6577901147.

The spelling of 74436648 in words is "seventy-four million, four hundred thirty-six thousand, six hundred forty-eight".