74211390 has 80 divisors (see below), whose sum is σ = 217712880. Its totient is φ = 17988480.

The previous prime is 74211329. The next prime is 74211407. The reversal of 74211390 is 9311247.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4746 + ... + 13074.

It is an arithmetic number, because the mean of its divisors is an integer number (2721411).

Almost surely, 2^74211390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74211390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108856440).

74211390 is an abundant number, since it is smaller than the sum of its proper divisors (143501490).

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

74211390 is a wasteful number, since it uses less digits than its factorization.

74211390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359 (or 8350 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 74211390 is about 8614.6032990498. The cubic root of 74211390 is about 420.2330339442.

The spelling of 74211390 in words is "seventy-four million, two hundred eleven thousand, three hundred ninety".