4257037640 has 32 divisors (see below), whose sum is σ = 9605969280. Its totient is φ = 1697902272.

The previous prime is 4257037637. The next prime is 4257037649. The reversal of 4257037640 is 467307524.

It is a junction number, because it is equal to n+sod(n) for n = 4257037594 and 4257037603.

It is not an unprimeable number, because it can be changed into a prime (4257037649) 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, 139472 + ... + 167231.

It is an arithmetic number, because the mean of its divisors is an integer number (300186540).

Almost surely, 2^4257037640 is an apocalyptic number.

4257037640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4257037640 is an abundant number, since it is smaller than the sum of its proper divisors (5348931640).

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

4257037640 is a wasteful number, since it uses less digits than its factorization.

4257037640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307061 (or 307057 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 4257037640 is about 65245.9779603310. The cubic root of 4257037640 is about 1620.6994947029.

The spelling of 4257037640 in words is "four billion, two hundred fifty-seven million, thirty-seven thousand, six hundred forty".