201577420 has 24 divisors (see below), whose sum is σ = 461796048. Its totient is φ = 73300800.

The previous prime is 201577393. The next prime is 201577433. The reversal of 201577420 is 24775102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457911 + ... + 458350.

It is an arithmetic number, because the mean of its divisors is an integer number (19241502).

Almost surely, 2^201577420 is an apocalyptic number.

201577420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201577420 is an abundant number, since it is smaller than the sum of its proper divisors (260218628).

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

201577420 is a wasteful number, since it uses less digits than its factorization.

201577420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916281 (or 916279 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 201577420 is about 14197.7963078782. The cubic root of 201577420 is about 586.3369912267.

The spelling of 201577420 in words is "two hundred one million, five hundred seventy-seven thousand, four hundred twenty".