201028680 has 48 divisors (see below), whose sum is σ = 653344380. Its totient is φ = 53607552.

The previous prime is 201028673. The next prime is 201028687. The reversal of 201028680 is 86820102.

It is an interprime number because it is at equal distance from previous prime (201028673) and next prime (201028687).

It can be written as a sum of positive squares in 2 ways, for example, as 201015684 + 12996 = 14178^2 + 114^2 .

It is not an unprimeable number, because it can be changed into a prime (201028687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278847 + ... + 279566.

Almost surely, 2^201028680 is an apocalyptic number.

201028680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201028680 is an abundant number, since it is smaller than the sum of its proper divisors (452315700).

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

201028680 is a wasteful number, since it uses less digits than its factorization.

201028680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558430 (or 558423 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 201028680 is about 14178.4583082929. The cubic root of 201028680 is about 585.8044597575.

Adding to 201028680 its reverse (86820102), we get a palindrome (287848782).

It can be divided in two parts, 20102 and 8680, that added together give a palindrome (28782).

The spelling of 201028680 in words is "two hundred one million, twenty-eight thousand, six hundred eighty".