74606140 has 48 divisors (see below), whose sum is σ = 180734400. Its totient is φ = 25339392.

The previous prime is 74606137. The next prime is 74606143. The reversal of 74606140 is 4160647.

It is an interprime number because it is at equal distance from previous prime (74606137) and next prime (74606143).

It is a super-2 number, since 2×74606140² = 11132152251399200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 74606099 and 74606108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74606143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12816 + ... + 17704.

It is an arithmetic number, because the mean of its divisors is an integer number (3765300).

Almost surely, 2^74606140 is an apocalyptic number.

74606140 is a gapful number since it is divisible by the number (70) 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 74606140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90367200).

74606140 is an abundant number, since it is smaller than the sum of its proper divisors (106128260).

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

74606140 is a wasteful number, since it uses less digits than its factorization.

74606140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014 (or 5012 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 74606140 is about 8637.4845875405. The cubic root of 74606140 is about 420.9768268850.

Adding to 74606140 its reverse (4160647), we get a palindrome (78766787).

The spelling of 74606140 in words is "seventy-four million, six hundred six thousand, one hundred forty".