1257207488 has 56 divisors (see below), whose sum is σ = 2552821920. Its totient is φ = 614082560.

The previous prime is 1257207467. The next prime is 1257207509. The reversal of 1257207488 is 8847027521.

It is an interprime number because it is at equal distance from previous prime (1257207467) and next prime (1257207509).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952493 + ... + 953811.

Almost surely, 2^1257207488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1257207488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276410960).

1257207488 is an abundant number, since it is smaller than the sum of its proper divisors (1295614432).

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

1257207488 is a wasteful number, since it uses less digits than its factorization.

1257207488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 1257207488 is about 35457.1218234081. The cubic root of 1257207488 is about 1079.2837866861.

The spelling of 1257207488 in words is "one billion, two hundred fifty-seven million, two hundred seven thousand, four hundred eighty-eight".