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720216148 = 221571146841
BaseRepresentation
bin101010111011011…
…010000001010100
31212012012202211011
4222323122001110
52433333404043
6155244422004
723563510351
oct5273320124
91765182734
10720216148
1133a5a8063
12181247904
13b629a002
146b91b628
154336759d
hex2aeda054

720216148 has 12 divisors (see below), whose sum is σ = 1268407252. Its totient is φ = 357814080.

The previous prime is 720216143. The next prime is 720216179. The reversal of 720216148 is 841612027.

It can be written as a sum of positive squares in 2 ways, for example, as 293711044 + 426505104 = 17138^2 + 20652^2 .

It is a super-2 number, since 2×7202161482 = 1037422599679915808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720216143) 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, 572793 + ... + 574048.

Almost surely, 2720216148 is an apocalyptic number.

It is an amenable number.

720216148 is a deficient number, since it is larger than the sum of its proper divisors (548191104).

720216148 is a wasteful number, since it uses less digits than its factorization.

720216148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147002 (or 1147000 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 720216148 is about 26836.8431079365. The cubic root of 720216148 is about 896.3706298446.

The spelling of 720216148 in words is "seven hundred twenty million, two hundred sixteen thousand, one hundred forty-eight".

Divisors: 1 2 4 157 314 628 1146841 2293682 4587364 180054037 360108074 720216148