2821528 has 8 divisors (see below), whose sum is σ = 5290380. Its totient is φ = 1410760.

The previous prime is 2821517. The next prime is 2821537. The reversal of 2821528 is 8251282.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2821528² = 15922040509568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2821496 and 2821505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176338 + ... + 176353.

2^2821528 is an apocalyptic number.

It is an amenable number.

2821528 is a deficient number, since it is larger than the sum of its proper divisors (2468852).

2821528 is a wasteful number, since it uses less digits than its factorization.

2821528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352697 (or 352693 counting only the distinct ones).

The product of its digits is 2560, while the sum is 28.

The square root of 2821528 is about 1679.7404561420. The cubic root of 2821528 is about 141.3062772068.

Subtracting from 2821528 its sum of digits (28), we obtain a triangular number (2821500 = T₂₃₇₅).

The spelling of 2821528 in words is "two million, eight hundred twenty-one thousand, five hundred twenty-eight".