11257428 has 96 divisors (see below), whose sum is σ = 33053440. Its totient is φ = 2920320.

The previous prime is 11257409. The next prime is 11257439. The reversal of 11257428 is 82475211.

11257428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11257395 and 11257404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184518 + ... + 184578.

Almost surely, 2^11257428 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 11257428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16526720).

11257428 is an abundant number, since it is smaller than the sum of its proper divisors (21796012).

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

11257428 is a wasteful number, since it uses less digits than its factorization.

11257428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 86 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 11257428 is about 3355.2090843940. The cubic root of 11257428 is about 224.1195418476.

It can be divided in two parts, 1125742 and 8, that added together give a triangular number (1125750 = T₁₅₀₀).

The spelling of 11257428 in words is "eleven million, two hundred fifty-seven thousand, four hundred twenty-eight".