74320452 has 36 divisors (see below), whose sum is σ = 196035840. Its totient is φ = 23696112.

The previous prime is 74320409. The next prime is 74320453. The reversal of 74320452 is 25402347.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (74320453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44052 + ... + 45707.

It is an arithmetic number, because the mean of its divisors is an integer number (5445440).

Almost surely, 2^74320452 is an apocalyptic number.

It is an amenable number.

74320452 is an abundant number, since it is smaller than the sum of its proper divisors (121715388).

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

74320452 is a wasteful number, since it uses less digits than its factorization.

74320452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89792 (or 89787 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 74320452 is about 8620.9310402067. The cubic root of 74320452 is about 420.4387931139.

Adding to 74320452 its reverse (25402347), we get a palindrome (99722799).

The spelling of 74320452 in words is "seventy-four million, three hundred twenty thousand, four hundred fifty-two".