1252168764 has 96 divisors (see below), whose sum is σ = 3657540096. Its totient is φ = 323911680.

The previous prime is 1252168759. The next prime is 1252168769. The reversal of 1252168764 is 4678612521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1252168759) and next prime (1252168769).

It is a super-2 number, since 2×1252168764² = 3135853227074575392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252168769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234832 + ... + 240104.

It is an arithmetic number, because the mean of its divisors is an integer number (38099376).

Almost surely, 2^1252168764 is an apocalyptic number.

1252168764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252168764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828770048).

1252168764 is an abundant number, since it is smaller than the sum of its proper divisors (2405371332).

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

1252168764 is a wasteful number, since it uses less digits than its factorization.

1252168764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555 (or 5553 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1252168764 is about 35385.9967218673. The cubic root of 1252168764 is about 1077.8399797814.

The spelling of 1252168764 in words is "one billion, two hundred fifty-two million, one hundred sixty-eight thousand, seven hundred sixty-four".