15623130 has 32 divisors (see below), whose sum is σ = 39470400. Its totient is φ = 3946752.

The previous prime is 15623123. The next prime is 15623161. The reversal of 15623130 is 3132651.

It is a junction number, because it is equal to n+sod(n) for n = 15623097 and 15623106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13135 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (1233450).

Almost surely, 2^15623130 is an apocalyptic number.

15623130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15623130 is an abundant number, since it is smaller than the sum of its proper divisors (23847270).

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

15623130 is a wasteful number, since it uses less digits than its factorization.

15623130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27438.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 15623130 is about 3952.6105297638. The cubic root of 15623130 is about 249.9900262688.

Adding to 15623130 its reverse (3132651), we get a palindrome (18755781).

It can be divided in two parts, 15623 and 130, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 15623130 in words is "fifteen million, six hundred twenty-three thousand, one hundred thirty".