102203520 has 64 divisors (see below), whose sum is σ = 325779840. Its totient is φ = 27253760.

The previous prime is 102203483. The next prime is 102203533. The reversal of 102203520 is 25302201.

It is a tau number, because it is divible by the number of its divisors (64).

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 102203520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24696 + ... + 28535.

It is an arithmetic number, because the mean of its divisors is an integer number (5090310).

Almost surely, 2^102203520 is an apocalyptic number.

102203520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102203520 is an abundant number, since it is smaller than the sum of its proper divisors (223576320).

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

102203520 is an equidigital number, since it uses as much as digits as its factorization.

102203520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53253 (or 53241 counting only the distinct ones).

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

The square root of 102203520 is about 10109.5756587505. The cubic root of 102203520 is about 467.5434220489.

Adding to 102203520 its reverse (25302201), we get a palindrome (127505721).

The spelling of 102203520 in words is "one hundred two million, two hundred three thousand, five hundred twenty".