Search a number
-
+
478830 = 235111451
BaseRepresentation
bin1110100111001101110
3220022211110
41310321232
5110310310
614132450
74033002
oct1647156
9808743
10478830
112a7830
121b1126
13139c41
14c6702
1596d20
hex74e6e

478830 has 32 divisors (see below), whose sum is σ = 1254528. Its totient is φ = 116000.

The previous prime is 478823. The next prime is 478831. The reversal of 478830 is 38874.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478831) 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, 396 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (39204).

2478830 is an apocalyptic number.

478830 is an abundant number, since it is smaller than the sum of its proper divisors (775698).

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

478830 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 478830 = (808743)9.

478830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 478830 is about 691.9754330899. The cubic root of 478830 is about 78.2336844656.

The spelling of 478830 in words is "four hundred seventy-eight thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1451 2902 4353 7255 8706 14510 15961 21765 31922 43530 47883 79805 95766 159610 239415 478830