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354212020 = 22517710601
BaseRepresentation
bin10101000111001…
…101100010110100
3220200111211112201
4111013031202310
51211134241040
655051554244
711530516051
oct2507154264
9820454481
10354212020
11171a41808
129a75b984
13584cc416
1435086028
152116ba9a
hex151cd8b4

354212020 has 12 divisors (see below), whose sum is σ = 743845284. Its totient is φ = 141684800.

The previous prime is 354212011. The next prime is 354212071. The reversal of 354212020 is 20212453.

It can be written as a sum of positive squares in 2 ways, for example, as 210308004 + 143904016 = 14502^2 + 11996^2 .

It is a super-3 number, since 3×3542120203 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8855281 + ... + 8855320.

It is an arithmetic number, because the mean of its divisors is an integer number (61987107).

Almost surely, 2354212020 is an apocalyptic number.

It is an amenable number.

354212020 is an abundant number, since it is smaller than the sum of its proper divisors (389633264).

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

354212020 is a wasteful number, since it uses less digits than its factorization.

354212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17710610 (or 17710608 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 354212020 is about 18820.5212467668. The cubic root of 354212020 is about 707.5455950837.

Adding to 354212020 its reverse (20212453), we get a palindrome (374424473).

The spelling of 354212020 in words is "three hundred fifty-four million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 17710601 35421202 70842404 88553005 177106010 354212020