1012404224 has 52 divisors (see below), whose sum is σ = 2180411436. Its totient is φ = 467238912.

The previous prime is 1012404221. The next prime is 1012404241. The reversal of 1012404224 is 4224042101.

It can be written as a sum of positive squares in 2 ways, for example, as 40960000 + 971444224 = 6400^2 + 31168^2 .

It is a tau number, because it is divible by the number of its divisors (52).

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1012404196 and 1012404205.

It is not an unprimeable number, because it can be changed into a prime (1012404221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43742 + ... + 62754.

Almost surely, 2^1012404224 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 1012404224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090205718).

1012404224 is an abundant number, since it is smaller than the sum of its proper divisors (1168007212).

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

1012404224 is an equidigital number, since it uses as much as digits as its factorization.

1012404224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19050 (or 19028 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1012404224 is about 31818.3001431566. The cubic root of 1012404224 is about 1004.1177620951.

Adding to 1012404224 its reverse (4224042101), we get a palindrome (5236446325).

The spelling of 1012404224 in words is "one billion, twelve million, four hundred four thousand, two hundred twenty-four".