2509428 has 24 divisors (see below), whose sum is σ = 6058080. Its totient is φ = 807520.

The previous prime is 2509427. The next prime is 2509433. The reversal of 2509428 is 8249052.

It is a junction number, because it is equal to n+sod(n) for n = 2509395 and 2509404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509427) 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, 3258 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (252420).

2^2509428 is an apocalyptic number.

It is an amenable number.

2509428 is an abundant number, since it is smaller than the sum of its proper divisors (3548652).

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

2509428 is a wasteful number, since it uses less digits than its factorization.

2509428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247 (or 7245 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2509428 is about 1584.1174198903. The cubic root of 2509428 is about 135.8912770048.

The spelling of 2509428 in words is "two million, five hundred nine thousand, four hundred twenty-eight".