2387491 has 8 divisors (see below), whose sum is σ = 2461104. Its totient is φ = 2315040.

The previous prime is 2387477. The next prime is 2387501. The reversal of 2387491 is 1947832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2387491 is a prime.

It is a super-2 number, since 2×2387491² = 11400226550162, which contains 22 as substring.

It is a Duffinian number.

2387491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2387401) 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, 5461 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (307638).

2^2387491 is an apocalyptic number.

2387491 is a deficient number, since it is larger than the sum of its proper divisors (73613).

2387491 is a wasteful number, since it uses less digits than its factorization.

2387491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581.

The product of its digits is 12096, while the sum is 34.

The square root of 2387491 is about 1545.1508017019. The cubic root of 2387491 is about 133.6535753609.

The spelling of 2387491 in words is "two million, three hundred eighty-seven thousand, four hundred ninety-one".