1220388468 has 48 divisors (see below), whose sum is σ = 3228025920. Its totient is φ = 355739904.

The previous prime is 1220388467. The next prime is 1220388517. The reversal of 1220388468 is 8648830221.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220388467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202905 + ... + 208832.

It is an arithmetic number, because the mean of its divisors is an integer number (67250540).

Almost surely, 2^1220388468 is an apocalyptic number.

It is an amenable number.

1220388468 is an abundant number, since it is smaller than the sum of its proper divisors (2007637452).

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

1220388468 is a wasteful number, since it uses less digits than its factorization.

1220388468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411776 (or 411774 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 1220388468 is about 34934.0588537891. The cubic root of 1220388468 is about 1068.6431305745.

The spelling of 1220388468 in words is "one billion, two hundred twenty million, three hundred eighty-eight thousand, four hundred sixty-eight".