4057690 has 60 divisors (see below), whose sum is σ = 9226494. Its totient is φ = 1284192.

The previous prime is 4057687. The next prime is 4057693. The reversal of 4057690 is 967504.

It is an interprime number because it is at equal distance from previous prime (4057687) and next prime (4057693).

It can be written as a sum of positive squares in 3 ways, for example, as 1750329 + 2307361 = 1323^2 + 1519^2 .

It is a super-2 number, since 2×4057690² = 32929696272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4057693) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 312124 + ... + 312136.

Almost surely, 2^4057690 is an apocalyptic number.

4057690 is an abundant number, since it is smaller than the sum of its proper divisors (5168804).

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

4057690 is an equidigital number, since it uses as much as digits as its factorization.

4057690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 4057690 is about 2014.3708695273. The cubic root of 4057690 is about 159.4996085590.

The spelling of 4057690 in words is "four million, fifty-seven thousand, six hundred ninety".