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78233496 = 23311401739
BaseRepresentation
bin1001010100110…
…11111110011000
312110012200011220
410222123332120
5130011432441
611432452040
71636654665
oct452337630
9173180156
1078233496
1140184a90
122224a020
1313292313
14a566a6c
156d05466
hex4a9bf98

78233496 has 64 divisors (see below), whose sum is σ = 214185600. Its totient is φ = 23616000.

The previous prime is 78233471. The next prime is 78233497. The reversal of 78233496 is 69433287.

It is a super-2 number, since 2×782334962 = 12240959792764032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78233497) 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, 105495 + ... + 106233.

It is an arithmetic number, because the mean of its divisors is an integer number (3346650).

Almost surely, 278233496 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 78233496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107092800).

78233496 is an abundant number, since it is smaller than the sum of its proper divisors (135952104).

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

78233496 is a wasteful number, since it uses less digits than its factorization.

78233496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1156 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 78233496 is about 8844.9700960489. The cubic root of 78233496 is about 427.6917890518.

The spelling of 78233496 in words is "seventy-eight million, two hundred thirty-three thousand, four hundred ninety-six".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 401 739 802 1203 1478 1604 2217 2406 2956 3208 4411 4434 4812 5912 8129 8822 8868 9624 13233 16258 17644 17736 24387 26466 32516 35288 48774 52932 65032 97548 105864 195096 296339 592678 889017 1185356 1778034 2370712 3259729 3556068 6519458 7112136 9779187 13038916 19558374 26077832 39116748 78233496