1623230520 has 128 divisors (see below), whose sum is σ = 5100364800. Its totient is φ = 412498944.

The previous prime is 1623230509. The next prime is 1623230537. The reversal of 1623230520 is 250323261.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862941 + ... + 864819.

It is an arithmetic number, because the mean of its divisors is an integer number (39846600).

Almost surely, 2^1623230520 is an apocalyptic number.

1623230520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623230520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2550182400).

1623230520 is an abundant number, since it is smaller than the sum of its proper divisors (3477134280).

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

1623230520 is a wasteful number, since it uses less digits than its factorization.

1623230520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1623230520 is about 40289.3350652502. The cubic root of 1623230520 is about 1175.2404565982.

Adding to 1623230520 its reverse (250323261), we get a palindrome (1873553781).

The spelling of 1623230520 in words is "one billion, six hundred twenty-three million, two hundred thirty thousand, five hundred twenty".