2420987 has 8 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 2234752.

The previous prime is 2420981. The next prime is 2420989. The reversal of 2420987 is 7890242.

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

It is not a de Polignac number, because 2420987 - 2¹⁸ = 2158843 is a prime.

It is a super-2 number, since 2×2420987² = 11722356108338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (326592).

2^2420987 is an apocalyptic number.

2420987 is a deficient number, since it is larger than the sum of its proper divisors (191749).

2420987 is a wasteful number, since it uses less digits than its factorization.

2420987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2420987 is about 1555.9521200860. The cubic root of 2420987 is about 134.2757187693.

The spelling of 2420987 in words is "two million, four hundred twenty thousand, nine hundred eighty-seven".