1023520424 has 64 divisors (see below), whose sum is σ = 2124316800. Its totient is φ = 460145664.

The previous prime is 1023520387. The next prime is 1023520427. The reversal of 1023520424 is 4240253201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1023520424.

It is not an unprimeable number, because it can be changed into a prime (1023520427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477884 + ... + 480020.

It is an arithmetic number, because the mean of its divisors is an integer number (33192450).

Almost surely, 2^1023520424 is an apocalyptic number.

It is an amenable number.

1023520424 is an abundant number, since it is smaller than the sum of its proper divisors (1100796376).

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

1023520424 is a wasteful number, since it uses less digits than its factorization.

1023520424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1023520424 is about 31992.5057474403. The cubic root of 1023520424 is about 1007.7794643302.

Adding to 1023520424 its reverse (4240253201), we get a palindrome (5263773625).

The spelling of 1023520424 in words is "one billion, twenty-three million, five hundred twenty thousand, four hundred twenty-four".