74387456 has 104 divisors (see below), whose sum is σ = 176139264. Its totient is φ = 30965760.

The previous prime is 74387447. The next prime is 74387459. The reversal of 74387456 is 65478347.

It is a tau number, because it is divible by the number of its divisors (104).

It is a super-2 number, since 2×74387456² = 11066987220303872, which contains 22 as substring.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74387459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585665 + ... + 585791.

Almost surely, 2^74387456 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 74387456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88069632).

74387456 is an abundant number, since it is smaller than the sum of its proper divisors (101751808).

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

74387456 is a wasteful number, since it uses less digits than its factorization.

74387456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 153 counting only the distinct ones).

The product of its digits is 564480, while the sum is 44.

The square root of 74387456 is about 8624.8162878985. The cubic root of 74387456 is about 420.5651047748.

The spelling of 74387456 in words is "seventy-four million, three hundred eighty-seven thousand, four hundred fifty-six".