Search a number
-
+
492172880 = 2456152161
BaseRepresentation
bin11101010101011…
…111011001010000
31021022002222021012
4131111133121100
52001444013010
6120500550052
715124254233
oct3525373120
91238088235
10492172880
11232900851
121189b2328
137ac74574
144951941a
152d31e005
hex1d55f650

492172880 has 20 divisors (see below), whose sum is σ = 1144302132. Its totient is φ = 196869120.

The previous prime is 492172871. The next prime is 492172931. The reversal of 492172880 is 88271294.

It can be written as a sum of positive squares in 2 ways, for example, as 225961024 + 266211856 = 15032^2 + 16316^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076001 + ... + 3076160.

Almost surely, 2492172880 is an apocalyptic number.

492172880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

492172880 is an abundant number, since it is smaller than the sum of its proper divisors (652129252).

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

492172880 is a wasteful number, since it uses less digits than its factorization.

492172880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152174 (or 6152168 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 492172880 is about 22184.9696867046. The cubic root of 492172880 is about 789.5371320485.

The spelling of 492172880 in words is "four hundred ninety-two million, one hundred seventy-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 6152161 12304322 24608644 30760805 49217288 61521610 98434576 123043220 246086440 492172880