1023200520 has 32 divisors (see below), whose sum is σ = 3069601920. Its totient is φ = 272853440.

The previous prime is 1023200513. The next prime is 1023200527. The reversal of 1023200520 is 250023201.

It is an interprime number because it is at equal distance from previous prime (1023200513) and next prime (1023200527).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1023200520.

It is not an unprimeable number, because it can be changed into a prime (1023200527) 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, 4263216 + ... + 4263455.

It is an arithmetic number, because the mean of its divisors is an integer number (95925060).

Almost surely, 2^1023200520 is an apocalyptic number.

1023200520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023200520 is an abundant number, since it is smaller than the sum of its proper divisors (2046401400).

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

1023200520 is a wasteful number, since it uses less digits than its factorization.

1023200520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526685 (or 8526681 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1023200520 is about 31987.5056858143. The cubic root of 1023200520 is about 1007.6744586823.

Adding to 1023200520 its reverse (250023201), we get a palindrome (1273223721).

The spelling of 1023200520 in words is "one billion, twenty-three million, two hundred thousand, five hundred twenty".