2557006428 has 48 divisors (see below), whose sum is σ = 6104972160. Its totient is φ = 832711104.

The previous prime is 2557006399. The next prime is 2557006457. The reversal of 2557006428 is 8246007552.

It is an interprime number because it is at equal distance from previous prime (2557006399) and next prime (2557006457).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104326 + ... + 126482.

It is an arithmetic number, because the mean of its divisors is an integer number (127186920).

Almost surely, 2^2557006428 is an apocalyptic number.

It is an amenable number.

2557006428 is an abundant number, since it is smaller than the sum of its proper divisors (3547965732).

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

2557006428 is a wasteful number, since it uses less digits than its factorization.

2557006428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22386 (or 22384 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 2557006428 is about 50566.8510785475. The cubic root of 2557006428 is about 1367.4473268505.

The spelling of 2557006428 in words is "two billion, five hundred fifty-seven million, six thousand, four hundred twenty-eight".