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149589220 = 22511679951
BaseRepresentation
bin10001110101010…
…00110011100100
3101102110220211111
420322220303210
5301243323340
622502114404
73464326114
oct1072506344
9342426744
10149589220
1177491660
124211ba04
1324cb6c41
1415c1d044
15d1ecaea
hex8ea8ce4

149589220 has 24 divisors (see below), whose sum is σ = 342695808. Its totient is φ = 54396000.

The previous prime is 149589211. The next prime is 149589233. The reversal of 149589220 is 22985941.

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 7 ways as a sum of consecutive naturals, for example, 339756 + ... + 340195.

It is an arithmetic number, because the mean of its divisors is an integer number (14278992).

Almost surely, 2149589220 is an apocalyptic number.

149589220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149589220 is an abundant number, since it is smaller than the sum of its proper divisors (193106588).

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

149589220 is a wasteful number, since it uses less digits than its factorization.

149589220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679971 (or 679969 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 149589220 is about 12230.6671935753. The cubic root of 149589220 is about 530.8438201822.

The spelling of 149589220 in words is "one hundred forty-nine million, five hundred eighty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 679951 1359902 2719804 3399755 6799510 7479461 13599020 14958922 29917844 37397305 74794610 149589220