2157652 has 24 divisors (see below), whose sum is σ = 4346496. Its totient is φ = 918048.

The previous prime is 2157641. The next prime is 2157667. The reversal of 2157652 is 2567512.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 5³ + 7⁴ + 6⁶ + 5⁵ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2157652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7218 + ... + 7510.

It is an arithmetic number, because the mean of its divisors is an integer number (181104).

2^2157652 is an apocalyptic number.

It is an amenable number.

2157652 is an abundant number, since it is smaller than the sum of its proper divisors (2188844).

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

2157652 is a wasteful number, since it uses less digits than its factorization.

2157652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 565 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 2157652 is about 1468.8948226473. The cubic root of 2157652 is about 129.2192254137.

It can be divided in two parts, 2157 and 652, that added together give a square (2809 = 53²).

The spelling of 2157652 in words is "two million, one hundred fifty-seven thousand, six hundred fifty-two".