201087864 has 48 divisors (see below), whose sum is σ = 551522400. Its totient is φ = 66178944.

The previous prime is 201087857. The next prime is 201087893. The reversal of 201087864 is 468780102.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11989 + ... + 23364.

It is an arithmetic number, because the mean of its divisors is an integer number (11490050).

Almost surely, 2^201087864 is an apocalyptic number.

201087864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201087864 is an abundant number, since it is smaller than the sum of its proper divisors (350434536).

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

201087864 is a wasteful number, since it uses less digits than its factorization.

201087864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35444 (or 35437 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 201087864 is about 14180.5452645517. The cubic root of 201087864 is about 585.8619421846.

It can be divided in two parts, 20108 and 7864, that added together give a palindrome (27972).

The spelling of 201087864 in words is "two hundred one million, eighty-seven thousand, eight hundred sixty-four".