287026420 has 12 divisors (see below), whose sum is σ = 602755524. Its totient is φ = 114810560.

The previous prime is 287026417. The next prime is 287026423. The reversal of 287026420 is 24620782.

It is an interprime number because it is at equal distance from previous prime (287026417) and next prime (287026423).

It can be written as a sum of positive squares in 2 ways, for example, as 52446564 + 234579856 = 7242^2 + 15316^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287026423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7175641 + ... + 7175680.

It is an arithmetic number, because the mean of its divisors is an integer number (50229627).

Almost surely, 2^287026420 is an apocalyptic number.

287026420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287026420 is an abundant number, since it is smaller than the sum of its proper divisors (315729104).

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

287026420 is a wasteful number, since it uses less digits than its factorization.

287026420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14351330 (or 14351328 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 287026420 is about 16941.8540897978. The cubic root of 287026420 is about 659.6404684005.

The spelling of 287026420 in words is "two hundred eighty-seven million, twenty-six thousand, four hundred twenty".