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378807020 = 22583228197
BaseRepresentation
bin10110100101000…
…010001011101100
3222101210101112122
4112211002023230
51233433311040
6101331052112
712246543434
oct2645021354
9871711478
10378807020
11184910359
12a6a41038
1360631187
14384492c4
15233c91b5
hex169422ec

378807020 has 24 divisors (see below), whose sum is σ = 805082544. Its totient is φ = 149696576.

The previous prime is 378806977. The next prime is 378807029. The reversal of 378807020 is 20708873.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (378807029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112439 + ... + 115758.

It is an arithmetic number, because the mean of its divisors is an integer number (33545106).

Almost surely, 2378807020 is an apocalyptic number.

It is an amenable number.

378807020 is an abundant number, since it is smaller than the sum of its proper divisors (426275524).

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

378807020 is a wasteful number, since it uses less digits than its factorization.

378807020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228289 (or 228287 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 378807020 is about 19462.9653444690. The cubic root of 378807020 is about 723.5568724937.

The spelling of 378807020 in words is "three hundred seventy-eight million, eight hundred seven thousand, twenty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 228197 456394 912788 1140985 2281970 4563940 18940351 37880702 75761404 94701755 189403510 378807020