1662504420 has 24 divisors (see below), whose sum is σ = 4655012544. Its totient is φ = 443334496.

The previous prime is 1662504407. The next prime is 1662504439. The reversal of 1662504420 is 244052661.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 in 7 ways as a sum of consecutive naturals, for example, 13854144 + ... + 13854263.

It is an arithmetic number, because the mean of its divisors is an integer number (193958856).

Almost surely, 2^1662504420 is an apocalyptic number.

1662504420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662504420 is an abundant number, since it is smaller than the sum of its proper divisors (2992508124).

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

1662504420 is a wasteful number, since it uses less digits than its factorization.

1662504420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708419 (or 27708417 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1662504420 is about 40773.8202772318. The cubic root of 1662504420 is about 1184.6433009258.

The spelling of 1662504420 in words is "one billion, six hundred sixty-two million, five hundred four thousand, four hundred twenty".