1262790464 has 224 divisors, whose sum is σ = 3113349120. Its totient is φ = 501645312.

The previous prime is 1262790443. The next prime is 1262790467. The reversal of 1262790464 is 4640972621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262790467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9943169 + ... + 9943295.

It is an arithmetic number, because the mean of its divisors is an integer number (13898880).

Almost surely, 2^1262790464 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 1262790464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556674560).

1262790464 is an abundant number, since it is smaller than the sum of its proper divisors (1850558656).

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

1262790464 is a wasteful number, since it uses less digits than its factorization.

1262790464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1262790464 is about 35535.7631689542. The cubic root of 1262790464 is about 1080.8790465531.

The spelling of 1262790464 in words is "one billion, two hundred sixty-two million, seven hundred ninety thousand, four hundred sixty-four".