1228036505 has 16 divisors (see below), whose sum is σ = 1487640000. Its totient is φ = 973131840.

The previous prime is 1228036489. The next prime is 1228036517. The reversal of 1228036505 is 5056308221.

It is not a de Polignac number, because 1228036505 - 2⁴ = 1228036489 is a prime.

It is a super-2 number, since 2×1228036505² = 3016147315225230050, which contains 22 as substring.

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, 345035 + ... + 348575.

It is an arithmetic number, because the mean of its divisors is an integer number (92977500).

Almost surely, 2^1228036505 is an apocalyptic number.

It is an amenable number.

1228036505 is a deficient number, since it is larger than the sum of its proper divisors (259603495).

1228036505 is a wasteful number, since it uses less digits than its factorization.

1228036505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1228036505 is about 35043.3517945986. The cubic root of 1228036505 is about 1070.8708387933.

The spelling of 1228036505 in words is "one billion, two hundred twenty-eight million, thirty-six thousand, five hundred five".