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148985680 = 2453750333
BaseRepresentation
bin10001110000101…
…01011101010000
3101101100020221011
420320111131100
5301120020210
622441140304
73456233404
oct1070253520
9341306834
10148985680
117710a168
1241a8a694
1324b3530c
1415b03104
15d12dd8a
hex8e15750

148985680 has 40 divisors (see below), whose sum is σ = 355760712. Its totient is φ = 57982464.

The previous prime is 148985653. The next prime is 148985687. The reversal of 148985680 is 86589841.

It can be written as a sum of positive squares in 4 ways, for example, as 62346816 + 86638864 = 7896^2 + 9308^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148985687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22207 + ... + 28126.

Almost surely, 2148985680 is an apocalyptic number.

148985680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148985680 is an abundant number, since it is smaller than the sum of its proper divisors (206775032).

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

148985680 is a wasteful number, since it uses less digits than its factorization.

148985680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50383 (or 50377 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 148985680 is about 12205.9690315845. The cubic root of 148985680 is about 530.1289350484.

The spelling of 148985680 in words is "one hundred forty-eight million, nine hundred eighty-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 37 40 74 80 148 185 296 370 592 740 1480 2960 50333 100666 201332 251665 402664 503330 805328 1006660 1862321 2013320 3724642 4026640 7449284 9311605 14898568 18623210 29797136 37246420 74492840 148985680