1020515072 has 36 divisors (see below), whose sum is σ = 2050099296. Its totient is φ = 506987520.

The previous prime is 1020515059. The next prime is 1020515081. The reversal of 1020515072 is 2705150201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27497 + ... + 52887.

Almost surely, 2^1020515072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020515072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025049648).

1020515072 is an abundant number, since it is smaller than the sum of its proper divisors (1029584224).

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

1020515072 is an equidigital number, since it uses as much as digits as its factorization.

1020515072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25564 (or 25550 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 1020515072 is about 31945.5015925560. The cubic root of 1020515072 is about 1006.7921199926.

Adding to 1020515072 its reverse (2705150201), we get a palindrome (3725665273).

The spelling of 1020515072 in words is "one billion, twenty million, five hundred fifteen thousand, seventy-two".