1620062500 has 189 divisors, whose sum is σ = 4309456557. Its totient is φ = 531300000.

The previous prime is 1620062471. The next prime is 1620062519. The reversal of 1620062500 is 52600261.

The square root of 1620062500 is 40250.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 1419330276 + 200732224 = 37674^2 + 14168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 70437489 + ... + 70437511.

Almost surely, 2^1620062500 is an apocalyptic number.

1620062500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1620062500 is the 40250-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620062500

1620062500 is an abundant number, since it is smaller than the sum of its proper divisors (2689394057).

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

1620062500 is an frugal number, since it uses more digits than its factorization.

1620062500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The cubic root of 1620062500 is about 1174.4753958125.

Adding to 1620062500 its reverse (52600261), we get a palindrome (1672662761).

The spelling of 1620062500 in words is "one billion, six hundred twenty million, sixty-two thousand, five hundred".