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149850020 = 22573197521
BaseRepresentation
bin10001110111010…
…00011110100100
3101102222011120202
420323220132210
5301330200040
622511450032
73466463345
oct1073503644
9342864522
10149850020
117764a5a1
1242226918
1325078868
1415c8a0cc
15d250015
hex8ee87a4

149850020 has 48 divisors (see below), whose sum is σ = 321230448. Its totient is φ = 58705920.

The previous prime is 149850013. The next prime is 149850023. The reversal of 149850020 is 20058941.

149850020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4502884 + 145347136 = 2122^2 + 12056^2 .

It is not an unprimeable number, because it can be changed into a prime (149850023) 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, 287360 + ... + 287880.

It is an arithmetic number, because the mean of its divisors is an integer number (6692301).

Almost surely, 2149850020 is an apocalyptic number.

149850020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149850020 is an abundant number, since it is smaller than the sum of its proper divisors (171380428).

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

149850020 is a wasteful number, since it uses less digits than its factorization.

149850020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 149850020 is about 12241.3242747670. The cubic root of 149850020 is about 531.1521393908.

The spelling of 149850020 in words is "one hundred forty-nine million, eight hundred fifty thousand, twenty".

Divisors: 1 2 4 5 10 20 73 146 197 292 365 394 521 730 788 985 1042 1460 1970 2084 2605 3940 5210 10420 14381 28762 38033 57524 71905 76066 102637 143810 152132 190165 205274 287620 380330 410548 513185 760660 1026370 2052740 7492501 14985002 29970004 37462505 74925010 149850020