74517444 has 18 divisors (see below), whose sum is σ = 188363630. Its totient is φ = 24839136.

The previous prime is 74517439. The next prime is 74517479. The reversal of 74517444 is 44471547.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70056900 + 4460544 = 8370^2 + 2112^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2069929 = 74517444 / (7 + 4 + 5 + 1 + 7 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 74517399 and 74517408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034929 + ... + 1035000.

Almost surely, 2^74517444 is an apocalyptic number.

It is an amenable number.

74517444 is an abundant number, since it is smaller than the sum of its proper divisors (113846186).

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

74517444 is a wasteful number, since it uses less digits than its factorization.

74517444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069939 (or 2069934 counting only the distinct ones).

The product of its digits is 62720, while the sum is 36.

The square root of 74517444 is about 8632.3486954594. The cubic root of 74517444 is about 420.8099337075.

The spelling of 74517444 in words is "seventy-four million, five hundred seventeen thousand, four hundred forty-four".