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672399360 = 21833519
BaseRepresentation
bin101000000101000…
…000000000000000
31201212020102112000
4220011000000000
52334113234420
6150415504000
722443204663
oct5005000000
91655212460
10672399360
11315608656
12169228000
13a93c7559
14654316da
153e06e690
hex28140000

672399360 has 304 divisors, whose sum is σ = 2516577600. Its totient is φ = 169869312.

The previous prime is 672399313. The next prime is 672399389. The reversal of 672399360 is 63993276.

It is a tau number, because it is divible by the number of its divisors (304).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35389431 + ... + 35389449.

Almost surely, 2672399360 is an apocalyptic number.

672399360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672399360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1258288800).

672399360 is an abundant number, since it is smaller than the sum of its proper divisors (1844178240).

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

672399360 is an frugal number, since it uses more digits than its factorization.

672399360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The square root of 672399360 is about 25930.6644727820. The cubic root of 672399360 is about 876.0773059943.

The spelling of 672399360 in words is "six hundred seventy-two million, three hundred ninety-nine thousand, three hundred sixty".