74427120 has 80 divisors (see below), whose sum is σ = 256367520. Its totient is φ = 19846656.

The previous prime is 74427107. The next prime is 74427127. The reversal of 74427120 is 2172447.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74427127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15069 + ... + 19388.

It is an arithmetic number, because the mean of its divisors is an integer number (3204594).

Almost surely, 2^74427120 is an apocalyptic number.

It is an amenable number.

74427120 is an abundant number, since it is smaller than the sum of its proper divisors (181940400).

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

74427120 is a wasteful number, since it uses less digits than its factorization.

74427120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34479 (or 34467 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 74427120 is about 8627.1153927602. The cubic root of 74427120 is about 420.6398410777.

Adding to 74427120 its reverse (2172447), we get a palindrome (76599567).

It can be divided in two parts, 74427 and 120, that added together give a palindrome (74547).

The spelling of 74427120 in words is "seventy-four million, four hundred twenty-seven thousand, one hundred twenty".