1226616020 has 48 divisors (see below), whose sum is σ = 3003974400. Its totient is φ = 420551712.

The previous prime is 1226616019. The next prime is 1226616031. The reversal of 1226616020 is 206166221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82544 + ... + 96263.

It is an arithmetic number, because the mean of its divisors is an integer number (62582800).

Almost surely, 2^1226616020 is an apocalyptic number.

1226616020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226616020 is an abundant number, since it is smaller than the sum of its proper divisors (1777358380).

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

1226616020 is a wasteful number, since it uses less digits than its factorization.

1226616020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178837 (or 178821 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1226616020 is about 35023.0783912551. The cubic root of 1226616020 is about 1070.4577829795.

The spelling of 1226616020 in words is "one billion, two hundred twenty-six million, six hundred sixteen thousand, twenty".