1258267632 has 20 divisors (see below), whose sum is σ = 3250524840. Its totient is φ = 419422528.

The previous prime is 1258267603. The next prime is 1258267657. The reversal of 1258267632 is 2367628521.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13106907 + ... + 13107002.

It is an arithmetic number, because the mean of its divisors is an integer number (162526242).

Almost surely, 2^1258267632 is an apocalyptic number.

1258267632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1258267632 is an abundant number, since it is smaller than the sum of its proper divisors (1992257208).

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

1258267632 is a wasteful number, since it uses less digits than its factorization.

1258267632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26213920 (or 26213914 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 1258267632 is about 35472.0683355228. The cubic root of 1258267632 is about 1079.5870712213.

The spelling of 1258267632 in words is "one billion, two hundred fifty-eight million, two hundred sixty-seven thousand, six hundred thirty-two".