1406620220 has 24 divisors (see below), whose sum is σ = 2960774208. Its totient is φ = 561339200.

The previous prime is 1406620219. The next prime is 1406620247. The reversal of 1406620220 is 220266041.

It is a super-3 number, since 3×1406620220³ (a number of 28 digits) contains 333 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 in 7 ways as a sum of consecutive naturals, for example, 72971 + ... + 90210.

It is an arithmetic number, because the mean of its divisors is an integer number (123365592).

Almost surely, 2^1406620220 is an apocalyptic number.

1406620220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406620220 is an abundant number, since it is smaller than the sum of its proper divisors (1554153988).

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

1406620220 is a wasteful number, since it uses less digits than its factorization.

1406620220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163621 (or 163619 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1406620220 is about 37504.9359418197. The cubic root of 1406620220 is about 1120.4494953854.

Adding to 1406620220 its reverse (220266041), we get a palindrome (1626886261).

The spelling of 1406620220 in words is "one billion, four hundred six million, six hundred twenty thousand, two hundred twenty".