74127720 has 32 divisors (see below), whose sum is σ = 222383520. Its totient is φ = 19767360.

The previous prime is 74127679. The next prime is 74127733. The reversal of 74127720 is 2772147.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 308746 + ... + 308985.

It is an arithmetic number, because the mean of its divisors is an integer number (6949485).

Almost surely, 2^74127720 is an apocalyptic number.

It is an amenable number.

74127720 is an abundant number, since it is smaller than the sum of its proper divisors (148255800).

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

74127720 is a wasteful number, since it uses less digits than its factorization.

74127720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617745 (or 617741 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 74127720 is about 8609.7456408421. The cubic root of 74127720 is about 420.0750432802.

Adding to 74127720 its reverse (2772147), we get a palindrome (76899867).

It can be divided in two parts, 74127 and 720, that added together give a palindrome (74847).

The spelling of 74127720 in words is "seventy-four million, one hundred twenty-seven thousand, seven hundred twenty".