287401485 has 16 divisors (see below), whose sum is σ = 525534336. Its totient is φ = 131383488.

The previous prime is 287401469. The next prime is 287401487. The reversal of 287401485 is 584104782.

It is a happy number.

It is not a de Polignac number, because 287401485 - 2⁴ = 287401469 is a prime.

It is a super-2 number, since 2×287401485² = 165199227160410450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287401487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368474 + ... + 1368683.

It is an arithmetic number, because the mean of its divisors is an integer number (32845896).

Almost surely, 2^287401485 is an apocalyptic number.

It is an amenable number.

287401485 is a deficient number, since it is larger than the sum of its proper divisors (238132851).

287401485 is a wasteful number, since it uses less digits than its factorization.

287401485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737172.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 287401485 is about 16952.9196600468. The cubic root of 287401485 is about 659.9276665448.

The spelling of 287401485 in words is "two hundred eighty-seven million, four hundred one thousand, four hundred eighty-five".