1024399424 has 28 divisors (see below), whose sum is σ = 2033855724. Its totient is φ = 511931904.

The previous prime is 1024399373. The next prime is 1024399429. The reversal of 1024399424 is 4249934201.

It can be written as a sum of positive squares in 2 ways, for example, as 206439424 + 817960000 = 14368^2 + 28600^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1024399429) 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, 186542 + ... + 191954.

Almost surely, 2^1024399424 is an apocalyptic number.

It is an amenable number.

1024399424 is a deficient number, since it is larger than the sum of its proper divisors (1009456300).

1024399424 is an equidigital number, since it uses as much as digits as its factorization.

1024399424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382 (or 8372 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1024399424 is about 32006.2403915237. The cubic root of 1024399424 is about 1008.0678756679.

It can be divided in two parts, 1024 and 399424, that multiplied together give a square (409010176 = 20224²).

The spelling of 1024399424 in words is "one billion, twenty-four million, three hundred ninety-nine thousand, four hundred twenty-four".