905223424 has 72 divisors (see below), whose sum is σ = 2084781888. Its totient is φ = 384245760.

The previous prime is 905223421. The next prime is 905223427. The reversal of 905223424 is 424322509.

It is an interprime number because it is at equal distance from previous prime (905223421) and next prime (905223427).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905223421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189384 + ... + 194104.

It is an arithmetic number, because the mean of its divisors is an integer number (28955304).

Almost surely, 2^905223424 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 905223424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042390944).

905223424 is an abundant number, since it is smaller than the sum of its proper divisors (1179558464).

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

905223424 is a wasteful number, since it uses less digits than its factorization.

905223424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 905223424 is about 30086.9311163502. The cubic root of 905223424 is about 967.3536198852.

The spelling of 905223424 in words is "nine hundred five million, two hundred twenty-three thousand, four hundred twenty-four".