1262252628 has 144 divisors (see below), whose sum is σ = 3942754816. Its totient is φ = 331568640.

The previous prime is 1262252587. The next prime is 1262252647. The reversal of 1262252628 is 8262522621.

1262252628 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 25 + 2 + 628 = 666.

It is a super-3 number, since 3×1262252628³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1262252592 and 1262252601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1024773 + ... + 1026003.

Almost surely, 2^1262252628 is an apocalyptic number.

1262252628 is a gapful number since it is divisible by the number (18) 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 1262252628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971377408).

1262252628 is an abundant number, since it is smaller than the sum of its proper divisors (2680502188).

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

1262252628 is a wasteful number, since it uses less digits than its factorization.

1262252628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1569 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1262252628 is about 35528.1948317108. The cubic root of 1262252628 is about 1080.7255721034.

The spelling of 1262252628 in words is "one billion, two hundred sixty-two million, two hundred fifty-two thousand, six hundred twenty-eight".