74065420 has 192 divisors, whose sum is σ = 203212800. Its totient is φ = 22256640.

The previous prime is 74065399. The next prime is 74065429. The reversal of 74065420 is 2456047.

It is not an unprimeable number, because it can be changed into a prime (74065429) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1575837 + ... + 1575883.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^74065420 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 74065420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

74065420 is an abundant number, since it is smaller than the sum of its proper divisors (129147380).

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

74065420 is a wasteful number, since it uses less digits than its factorization.

74065420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 74065420 is about 8606.1268872821. The cubic root of 74065420 is about 419.9573274862.

The spelling of 74065420 in words is "seventy-four million, sixty-five thousand, four hundred twenty".