1520122020 has 48 divisors (see below), whose sum is σ = 4328493120. Its totient is φ = 398494336.

The previous prime is 1520121979. The next prime is 1520122039. The reversal of 1520122020 is 202210251.

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

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, 211167 + ... + 218246.

It is an arithmetic number, because the mean of its divisors is an integer number (90176940).

Almost surely, 2^1520122020 is an apocalyptic number.

1520122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520122020 is an abundant number, since it is smaller than the sum of its proper divisors (2808371100).

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

1520122020 is a wasteful number, since it uses less digits than its factorization.

1520122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429484 (or 429482 counting only the distinct ones).

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

The square root of 1520122020 is about 38988.7422213131. The cubic root of 1520122020 is about 1149.8101816509.

Adding to 1520122020 its reverse (202210251), we get a palindrome (1722332271).

The spelling of 1520122020 in words is "one billion, five hundred twenty million, one hundred twenty-two thousand, twenty".