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149320784 = 2423405763
BaseRepresentation
bin10001110011001…
…11010001010000
3101101222021121102
420321213101100
5301211231114
622452243532
73462130364
oct1071472120
9341867542
10149320784
1177318a08
12420105a8
1324c219c2
1415b8d2a4
15d1982de
hex8e67450

149320784 has 20 divisors (see below), whose sum is σ = 301888416. Its totient is φ = 71414112.

The previous prime is 149320783. The next prime is 149320813. The reversal of 149320784 is 487023941.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149320781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202514 + ... + 203249.

Almost surely, 2149320784 is an apocalyptic number.

It is an amenable number.

149320784 is an abundant number, since it is smaller than the sum of its proper divisors (152567632).

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

149320784 is a wasteful number, since it uses less digits than its factorization.

149320784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405794 (or 405788 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 149320784 is about 12219.6883757320. The cubic root of 149320784 is about 530.5260991737.

The spelling of 149320784 in words is "one hundred forty-nine million, three hundred twenty thousand, seven hundred eighty-four".

Divisors: 1 2 4 8 16 23 46 92 184 368 405763 811526 1623052 3246104 6492208 9332549 18665098 37330196 74660392 149320784