1520006020 has 96 divisors (see below), whose sum is σ = 3500340480. Its totient is φ = 551093760.

The previous prime is 1520006003. The next prime is 1520006021. The reversal of 1520006020 is 206000251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1520005985 and 1520006003.

It is not an unprimeable number, because it can be changed into a prime (1520006021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5650446 + ... + 5650714.

It is an arithmetic number, because the mean of its divisors is an integer number (36461880).

Almost surely, 2^1520006020 is an apocalyptic number.

1520006020 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 1520006020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750170240).

1520006020 is an abundant number, since it is smaller than the sum of its proper divisors (1980334460).

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

1520006020 is a wasteful number, since it uses less digits than its factorization.

1520006020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1520006020 is about 38987.2545840304. The cubic root of 1520006020 is about 1149.7809336975.

Adding to 1520006020 its reverse (206000251), we get a palindrome (1726006271).

The spelling of 1520006020 in words is "one billion, five hundred twenty million, six thousand, twenty".