1520325730 has 128 divisors (see below), whose sum is σ = 3496214016. Its totient is φ = 462336000.

The previous prime is 1520325727. The next prime is 1520325739. The reversal of 1520325730 is 375230251.

1520325730 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×1520325730² = 4622780650600065800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520325739) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8787924 + ... + 8788096.

It is an arithmetic number, because the mean of its divisors is an integer number (27314172).

Almost surely, 2^1520325730 is an apocalyptic number.

1520325730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520325730 is an abundant number, since it is smaller than the sum of its proper divisors (1975888286).

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

1520325730 is a wasteful number, since it uses less digits than its factorization.

1520325730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 1520325730 is about 38991.3545545676. The cubic root of 1520325730 is about 1149.8615409863.

Adding to 1520325730 its reverse (375230251), we get a palindrome (1895555981).

The spelling of 1520325730 in words is "one billion, five hundred twenty million, three hundred twenty-five thousand, seven hundred thirty".