1466427820 has 96 divisors (see below), whose sum is σ = 3830815296. Its totient is φ = 463257600.

The previous prime is 1466427817. The next prime is 1466427821. The reversal of 1466427820 is 287246641.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1466427821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33540 + ... + 63700.

It is an arithmetic number, because the mean of its divisors is an integer number (39904326).

Almost surely, 2^1466427820 is an apocalyptic number.

1466427820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1466427820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915407648).

1466427820 is an abundant number, since it is smaller than the sum of its proper divisors (2364387476).

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

1466427820 is a wasteful number, since it uses less digits than its factorization.

1466427820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30211 (or 30209 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 1466427820 is about 38293.9658431978. The cubic root of 1466427820 is about 1136.1096020599.

The spelling of 1466427820 in words is "one billion, four hundred sixty-six million, four hundred twenty-seven thousand, eight hundred twenty".