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490723428 = 22313173147127
BaseRepresentation
bin11101001111111…
…101100001100100
31021012101022222210
4131033331201210
52001111122203
6120405523420
715106036356
oct3517754144
91235338883
10490723428
11232000858
12118413570
137a8878c0
144925d0d6
152d134803
hex1d3fd864

490723428 has 192 divisors, whose sum is σ = 1387266048. Its totient is φ = 133539840.

The previous prime is 490723421. The next prime is 490723433. The reversal of 490723428 is 824327094.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (490723421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3863901 + ... + 3864027.

It is an arithmetic number, because the mean of its divisors is an integer number (7225344).

Almost surely, 2490723428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490723428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693633024).

490723428 is an abundant number, since it is smaller than the sum of its proper divisors (896542620).

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

490723428 is a wasteful number, since it uses less digits than its factorization.

490723428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 490723428 is about 22152.2781672676. The cubic root of 490723428 is about 788.7613061269.

The spelling of 490723428 in words is "four hundred ninety million, seven hundred twenty-three thousand, four hundred twenty-eight".