1227328240 has 20 divisors (see below), whose sum is σ = 2853538344. Its totient is φ = 490931264.

The previous prime is 1227328229. The next prime is 1227328241. The reversal of 1227328240 is 428237221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227328241) 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, 7670722 + ... + 7670881.

Almost surely, 2^1227328240 is an apocalyptic number.

1227328240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227328240 is an abundant number, since it is smaller than the sum of its proper divisors (1626210104).

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

1227328240 is a wasteful number, since it uses less digits than its factorization.

1227328240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15341616 (or 15341610 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 1227328240 is about 35033.2447826347. The cubic root of 1227328240 is about 1070.6649257521.

The spelling of 1227328240 in words is "one billion, two hundred twenty-seven million, three hundred twenty-eight thousand, two hundred forty".