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149703860 = 2257485193
BaseRepresentation
bin10001110110001…
…00110010110100
3101102200202002102
420323010302310
5301311010420
622504401232
73465314255
oct1073046264
9342622072
10149703860
117755a7a9
1242176218
1325027187
1415c4cb2c
15d221a75
hex8ec4cb4

149703860 has 12 divisors (see below), whose sum is σ = 314378148. Its totient is φ = 59881536.

The previous prime is 149703847. The next prime is 149703901. The reversal of 149703860 is 68307941.

It can be written as a sum of positive squares in 2 ways, for example, as 15792676 + 133911184 = 3974^2 + 11572^2 .

It is a super-2 number, since 2×1497038602 = 44822491397799200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3742577 + ... + 3742616.

It is an arithmetic number, because the mean of its divisors is an integer number (26198179).

Almost surely, 2149703860 is an apocalyptic number.

149703860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149703860 is an abundant number, since it is smaller than the sum of its proper divisors (164674288).

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

149703860 is a wasteful number, since it uses less digits than its factorization.

149703860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7485202 (or 7485200 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 149703860 is about 12235.3528759901. The cubic root of 149703860 is about 530.9793923314.

The spelling of 149703860 in words is "one hundred forty-nine million, seven hundred three thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 7485193 14970386 29940772 37425965 74851930 149703860