1466642220 has 24 divisors (see below), whose sum is σ = 4106598384. Its totient is φ = 391104576.

The previous prime is 1466642213. The next prime is 1466642227. The reversal of 1466642220 is 222466641.

It is an interprime number because it is at equal distance from previous prime (1466642213) and next prime (1466642227).

It is a super-5 number, since 5×1466642220⁵ (a number of 47 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (1466642227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12221959 + ... + 12222078.

It is an arithmetic number, because the mean of its divisors is an integer number (171108266).

Almost surely, 2^1466642220 is an apocalyptic number.

1466642220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1466642220 is an abundant number, since it is smaller than the sum of its proper divisors (2639956164).

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

1466642220 is a wasteful number, since it uses less digits than its factorization.

1466642220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24444049 (or 24444047 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1466642220 is about 38296.7651375413. The cubic root of 1466642220 is about 1136.1649679009.

The spelling of 1466642220 in words is "one billion, four hundred sixty-six million, six hundred forty-two thousand, two hundred twenty".