2812157748 has 72 divisors (see below), whose sum is σ = 7538436360. Its totient is φ = 880865280.

The previous prime is 2812157713. The next prime is 2812157783. The reversal of 2812157748 is 8477512182.

2812157748 is a `hidden beast` number, since 28 + 12 + 1 + 577 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (2812157713) and next prime (2812157783).

It can be written as a sum of positive squares in 4 ways, for example, as 937094544 + 1875063204 = 30612^2 + 43302^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430668 + ... + 437148.

It is an arithmetic number, because the mean of its divisors is an integer number (104700505).

Almost surely, 2^2812157748 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 2812157748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3769218180).

2812157748 is an abundant number, since it is smaller than the sum of its proper divisors (4726278612).

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

2812157748 is a wasteful number, since it uses less digits than its factorization.

2812157748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217 (or 7212 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2812157748 is about 53029.7817080176. The cubic root of 2812157748 is about 1411.4967838499.

The spelling of 2812157748 in words is "two billion, eight hundred twelve million, one hundred fifty-seven thousand, seven hundred forty-eight".