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672880122 = 2362391931
BaseRepresentation
bin101000000110110…
…101010111111010
31201220010212000000
4220012311113322
52334224130442
6150434053430
722450246425
oct5006652772
91656125000
10672880122
11315906882
1216941a276
13a9535325
14655189bc
153e116d4c
hex281b55fa

672880122 has 56 divisors (see below), whose sum is σ = 1520406720. Its totient is φ = 223239240.

The previous prime is 672880057. The next prime is 672880123. The reversal of 672880122 is 221088276.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (672880123) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 347497 + ... + 349427.

It is an arithmetic number, because the mean of its divisors is an integer number (27150120).

Almost surely, 2672880122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672880122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760203360).

672880122 is an abundant number, since it is smaller than the sum of its proper divisors (847526598).

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

672880122 is a wasteful number, since it uses less digits than its factorization.

672880122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 672880122 is about 25939.9329605919. The cubic root of 672880122 is about 876.2860531373.

The spelling of 672880122 in words is "six hundred seventy-two million, eight hundred eighty thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 239 243 478 486 717 729 1434 1458 1931 2151 3862 4302 5793 6453 11586 12906 17379 19359 34758 38718 52137 58077 104274 116154 156411 174231 312822 348462 461509 469233 923018 938466 1384527 1407699 2769054 2815398 4153581 8307162 12460743 24921486 37382229 74764458 112146687 224293374 336440061 672880122