4257526628 has 12 divisors (see below), whose sum is σ = 7498129212. Its totient is φ = 2115204000.

The previous prime is 4257526613. The next prime is 4257526649. The reversal of 4257526628 is 8266257524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2231806564 + 2025720064 = 47242^2 + 45008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389123 + ... + 3390378.

It is an arithmetic number, because the mean of its divisors is an integer number (624844101).

Almost surely, 2^4257526628 is an apocalyptic number.

It is an amenable number.

4257526628 is a deficient number, since it is larger than the sum of its proper divisors (3240602584).

4257526628 is a wasteful number, since it uses less digits than its factorization.

4257526628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779662 (or 6779660 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The square root of 4257526628 is about 65249.7251181949. The cubic root of 4257526628 is about 1620.7615466374.

The spelling of 4257526628 in words is "four billion, two hundred fifty-seven million, five hundred twenty-six thousand, six hundred twenty-eight".