1252052646 has 64 divisors (see below), whose sum is σ = 2767564800. Its totient is φ = 375209856.

The previous prime is 1252052621. The next prime is 1252052663. The reversal of 1252052646 is 6462502521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 875460 + ... + 876888.

It is an arithmetic number, because the mean of its divisors is an integer number (43243200).

Almost surely, 2^1252052646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252052646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383782400).

1252052646 is an abundant number, since it is smaller than the sum of its proper divisors (1515512154).

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

1252052646 is a wasteful number, since it uses less digits than its factorization.

1252052646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1252052646 is about 35384.3559500523. The cubic root of 1252052646 is about 1077.8066614579.

The spelling of 1252052646 in words is "one billion, two hundred fifty-two million, fifty-two thousand, six hundred forty-six".