2421528 has 32 divisors (see below), whose sum is σ = 6100800. Its totient is φ = 800928.

The previous prime is 2421527. The next prime is 2421533. The reversal of 2421528 is 8251242.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2421498 and 2421507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3603 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (190650).

2^2421528 is an apocalyptic number.

It is an amenable number.

2421528 is an abundant number, since it is smaller than the sum of its proper divisors (3679272).

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

2421528 is a wasteful number, since it uses less digits than its factorization.

2421528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 787 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 2421528 is about 1556.1259589121. The cubic root of 2421528 is about 134.2857198905.

It can be divided in two parts, 242 and 1528, that added together give a triangular number (1770 = T₅₉).

The spelling of 2421528 in words is "two million, four hundred twenty-one thousand, five hundred twenty-eight".