1228447400 has 24 divisors (see below), whose sum is σ = 2856140670. Its totient is φ = 491378880.

The previous prime is 1228447399. The next prime is 1228447403. The reversal of 1228447400 is 47448221.

It can be written as a sum of positive squares in 3 ways, for example, as 600544036 + 627903364 = 24506^2 + 25058^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1228447403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3070919 + ... + 3071318.

Almost surely, 2^1228447400 is an apocalyptic number.

1228447400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228447400 is an abundant number, since it is smaller than the sum of its proper divisors (1627693270).

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

1228447400 is a wasteful number, since it uses less digits than its factorization.

1228447400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6142253 (or 6142244 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 1228447400 is about 35049.2139712148. The cubic root of 1228447400 is about 1070.9902615208.

The spelling of 1228447400 in words is "one billion, two hundred twenty-eight million, four hundred forty-seven thousand, four hundred".