74477744 has 40 divisors (see below), whose sum is σ = 161687568. Its totient is φ = 32935680.

The previous prime is 74477737. The next prime is 74477759. The reversal of 74477744 is 44777447.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 74477695 and 74477704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794 + ... + 12230.

Almost surely, 2^74477744 is an apocalyptic number.

74477744 is a gapful number since it is divisible by the number (74) 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 74477744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80843784).

74477744 is an abundant number, since it is smaller than the sum of its proper divisors (87209824).

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

74477744 is a wasteful number, since it uses less digits than its factorization.

74477744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11493 (or 11487 counting only the distinct ones).

The product of its digits is 614656, while the sum is 44.

The square root of 74477744 is about 8630.0488990503. The cubic root of 74477744 is about 420.7351900361.

The spelling of 74477744 in words is "seventy-four million, four hundred seventy-seven thousand, seven hundred forty-four".