1227613640 has 64 divisors (see below), whose sum is σ = 3110469120. Its totient is φ = 432000000.

The previous prime is 1227613601. The next prime is 1227613657. The reversal of 1227613640 is 463167221.

It is a super-2 number, since 2×1227613640² = 3014070498228099200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1227613597 and 1227613606.

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, 31361 + ... + 58640.

It is an arithmetic number, because the mean of its divisors is an integer number (48601080).

Almost surely, 2^1227613640 is an apocalyptic number.

1227613640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227613640 is an abundant number, since it is smaller than the sum of its proper divisors (1882855480).

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

1227613640 is a wasteful number, since it uses less digits than its factorization.

1227613640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90054 (or 90050 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1227613640 is about 35037.3178197190. The cubic root of 1227613640 is about 1070.7479092816.

The spelling of 1227613640 in words is "one billion, two hundred twenty-seven million, six hundred thirteen thousand, six hundred forty".