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378428412 = 2231131491873
BaseRepresentation
bin10110100011100…
…101101111111100
3222101002011012010
4112203211233330
51233334202122
6101315011220
712243405555
oct2643455774
9871064163
10378428412
1118468195a
12a6899b10
136052aa4b
143838b32c
1523351e0c
hex168e5bfc

378428412 has 48 divisors (see below), whose sum is σ = 897271200. Its totient is φ = 124121088.

The previous prime is 378428411. The next prime is 378428429. The reversal of 378428412 is 214824873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378428411) 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, 201108 + ... + 202980.

It is an arithmetic number, because the mean of its divisors is an integer number (18693150).

Almost surely, 2378428412 is an apocalyptic number.

It is an amenable number.

378428412 is an abundant number, since it is smaller than the sum of its proper divisors (518842788).

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

378428412 is a wasteful number, since it uses less digits than its factorization.

378428412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2140 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 378428412 is about 19453.2365430537. The cubic root of 378428412 is about 723.3157332298.

The spelling of 378428412 in words is "three hundred seventy-eight million, four hundred twenty-eight thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 113 149 226 298 339 447 452 596 678 894 1356 1788 1873 3746 5619 7492 11238 16837 22476 33674 50511 67348 101022 202044 211649 279077 423298 558154 634947 837231 846596 1116308 1269894 1674462 2539788 3348924 31535701 63071402 94607103 126142804 189214206 378428412