1520220446 has 4 divisors (see below), whose sum is σ = 2280330672. Its totient is φ = 760110222.

The previous prime is 1520220431. The next prime is 1520220451. The reversal of 1520220446 is 6440220251.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1520220446² = 4622140408872877832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380055110 + ... + 380055113.

It is an arithmetic number, because the mean of its divisors is an integer number (570082668).

Almost surely, 2^1520220446 is an apocalyptic number.

1520220446 is a deficient number, since it is larger than the sum of its proper divisors (760110226).

1520220446 is an equidigital number, since it uses as much as digits as its factorization.

1520220446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760110225.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1520220446 is about 38990.0044370349. The cubic root of 1520220446 is about 1149.8349973725.

Adding to 1520220446 its reverse (6440220251), we get a palindrome (7960440697).

The spelling of 1520220446 in words is "one billion, five hundred twenty million, two hundred twenty thousand, four hundred forty-six".