74154320 has 40 divisors (see below), whose sum is σ = 173593800. Its totient is φ = 29457920.

The previous prime is 74154319. The next prime is 74154331. The reversal of 74154320 is 2345147.

It can be written as a sum of positive squares in 4 ways, for example, as 2650384 + 71503936 = 1628^2 + 8456^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 74154320.

It is a congruent number.

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, 8810 + ... + 15030.

It is an arithmetic number, because the mean of its divisors is an integer number (4339845).

Almost surely, 2^74154320 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 74154320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86796900).

74154320 is an abundant number, since it is smaller than the sum of its proper divisors (99439480).

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

74154320 is a wasteful number, since it uses less digits than its factorization.

74154320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383 (or 6377 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 74154320 is about 8611.2902633694. The cubic root of 74154320 is about 420.1252838644.

Adding to 74154320 its reverse (2345147), we get a palindrome (76499467).

The spelling of 74154320 in words is "seventy-four million, one hundred fifty-four thousand, three hundred twenty".