4157690 has 32 divisors (see below), whose sum is σ = 8150544. Its totient is φ = 1520640.

The previous prime is 4157677. The next prime is 4157693. The reversal of 4157690 is 967514.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3736489 + 421201 = 1933^2 + 649^2 .

It is a super-2 number, since 2×4157690² = 34572772272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4157693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5960 + ... + 6620.

Almost surely, 2^4157690 is an apocalyptic number.

4157690 is a deficient number, since it is larger than the sum of its proper divisors (3992854).

4157690 is a wasteful number, since it uses less digits than its factorization.

4157690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 4157690 is about 2039.0414414621. The cubic root of 4157690 is about 160.7992559968.

The spelling of 4157690 in words is "four million, one hundred fifty-seven thousand, six hundred ninety".