1502221020 has 24 divisors (see below), whose sum is σ = 4206219024. Its totient is φ = 400592256.

The previous prime is 1502220917. The next prime is 1502221051. The reversal of 1502221020 is 201222051.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12518449 + ... + 12518568.

It is an arithmetic number, because the mean of its divisors is an integer number (175259126).

Almost surely, 2^1502221020 is an apocalyptic number.

1502221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1502221020 is an abundant number, since it is smaller than the sum of its proper divisors (2703998004).

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

1502221020 is a wasteful number, since it uses less digits than its factorization.

1502221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25037029 (or 25037027 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1502221020 is about 38758.4961008551. The cubic root of 1502221020 is about 1145.2789490900.

Adding to 1502221020 its reverse (201222051), we get a palindrome (1703443071).

The spelling of 1502221020 in words is "one billion, five hundred two million, two hundred twenty-one thousand, twenty".