201599020 has 48 divisors (see below), whose sum is σ = 484662528. Its totient is φ = 69001920.

The previous prime is 201598939. The next prime is 201599029. The reversal of 201599020 is 20995102.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 201599020.

It is not an unprimeable number, because it can be changed into a prime (201599029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135199 + ... + 136681.

It is an arithmetic number, because the mean of its divisors is an integer number (10097136).

Almost surely, 2^201599020 is an apocalyptic number.

201599020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201599020 is an abundant number, since it is smaller than the sum of its proper divisors (283063508).

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

201599020 is a wasteful number, since it uses less digits than its factorization.

201599020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 201599020 is about 14198.5569689317. The cubic root of 201599020 is about 586.3579334312.

The spelling of 201599020 in words is "two hundred one million, five hundred ninety-nine thousand, twenty".