1288174420 has 48 divisors (see below), whose sum is σ = 2915877888. Its totient is φ = 475205760.

The previous prime is 1288174397. The next prime is 1288174427. The reversal of 1288174420 is 244718821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288174420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288174427) 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, 547687 + ... + 550033.

It is an arithmetic number, because the mean of its divisors is an integer number (60747456).

Almost surely, 2^1288174420 is an apocalyptic number.

1288174420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1288174420 is an abundant number, since it is smaller than the sum of its proper divisors (1627703468).

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

1288174420 is a wasteful number, since it uses less digits than its factorization.

1288174420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480 (or 4478 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1288174420 is about 35891.1468192366. The cubic root of 1288174420 is about 1088.0734760157.

The spelling of 1288174420 in words is "one billion, two hundred eighty-eight million, one hundred seventy-four thousand, four hundred twenty".