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148808020 = 22552114281
BaseRepresentation
bin10001101111010…
…10000101010100
3101101000020020011
420313222011110
5301043324040
622433250004
73454563424
oct1067520524
9341006204
10148808020
1176aa8739
1241a03904
1324aa24aa
1415a98484
15d0e63ea
hex8dea154

148808020 has 24 divisors (see below), whose sum is σ = 313118568. Its totient is φ = 59404800.

The previous prime is 148808017. The next prime is 148808027. The reversal of 148808020 is 20808841.

It can be written as a sum of positive squares in 4 ways, for example, as 4519876 + 144288144 = 2126^2 + 12012^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148808027) 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, 3280 + ... + 17560.

It is an arithmetic number, because the mean of its divisors is an integer number (13046607).

Almost surely, 2148808020 is an apocalyptic number.

148808020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148808020 is an abundant number, since it is smaller than the sum of its proper divisors (164310548).

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

148808020 is a wasteful number, since it uses less digits than its factorization.

148808020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14811 (or 14809 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 148808020 is about 12198.6892738523. The cubic root of 148808020 is about 529.9181314152.

The spelling of 148808020 in words is "one hundred forty-eight million, eight hundred eight thousand, twenty".

Divisors: 1 2 4 5 10 20 521 1042 2084 2605 5210 10420 14281 28562 57124 71405 142810 285620 7440401 14880802 29761604 37202005 74404010 148808020