1228523487 has 8 divisors (see below), whose sum is σ = 1644076800. Its totient is φ = 815992920.

The previous prime is 1228523447. The next prime is 1228523507. The reversal of 1228523487 is 7843258221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1228523487 - 2⁶ = 1228523423 is a prime.

It is a super-2 number, since 2×1228523487² = 3018539916221278338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228523407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754737 + ... + 756362.

It is an arithmetic number, because the mean of its divisors is an integer number (205509600).

Almost surely, 2^1228523487 is an apocalyptic number.

1228523487 is a deficient number, since it is larger than the sum of its proper divisors (415553313).

1228523487 is a wasteful number, since it uses less digits than its factorization.

1228523487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511373.

The product of its digits is 215040, while the sum is 42.

The square root of 1228523487 is about 35050.2993853120. The cubic root of 1228523487 is about 1071.0123725621.

The spelling of 1228523487 in words is "one billion, two hundred twenty-eight million, five hundred twenty-three thousand, four hundred eighty-seven".