1030021456 has 20 divisors (see below), whose sum is σ = 1997500500. Its totient is φ = 514537472.

The previous prime is 1030021427. The next prime is 1030021457. The reversal of 1030021456 is 6541200301.

It can be written as a sum of positive squares in 2 ways, for example, as 305550400 + 724471056 = 17480^2 + 26916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030021457) 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, 11281 + ... + 46768.

It is an arithmetic number, because the mean of its divisors is an integer number (99875025).

Almost surely, 2^1030021456 is an apocalyptic number.

1030021456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1030021456 is a deficient number, since it is larger than the sum of its proper divisors (967479044).

1030021456 is a wasteful number, since it uses less digits than its factorization.

1030021456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59166 (or 59160 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1030021456 is about 32093.9473421391. The cubic root of 1030021456 is about 1009.9086464445.

Adding to 1030021456 its reverse (6541200301), we get a palindrome (7571221757).

The spelling of 1030021456 in words is "one billion, thirty million, twenty-one thousand, four hundred fifty-six".