1226615020 has 12 divisors (see below), whose sum is σ = 2575891584. Its totient is φ = 490646000.

The previous prime is 1226615011. The next prime is 1226615021. The reversal of 1226615020 is 205166221.

It is not an unprimeable number, because it can be changed into a prime (1226615021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30665356 + ... + 30665395.

It is an arithmetic number, because the mean of its divisors is an integer number (214657632).

Almost surely, 2^1226615020 is an apocalyptic number.

1226615020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226615020 is an abundant number, since it is smaller than the sum of its proper divisors (1349276564).

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

1226615020 is a wasteful number, since it uses less digits than its factorization.

1226615020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61330760 (or 61330758 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1226615020 is about 35023.0641149515. The cubic root of 1226615020 is about 1070.4574920821.

The spelling of 1226615020 in words is "one billion, two hundred twenty-six million, six hundred fifteen thousand, twenty".