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216040488 = 233171929312
BaseRepresentation
bin11001110000010…
…00010000101000
3120001111222211120
430320020100220
5420301243423
633234255240
75232212436
oct1470102050
9501458746
10216040488
11100a49464
1260427520
13359b2411
1420999d56
1513e76ee3
hexce08428

216040488 has 192 divisors, whose sum is σ = 643464000. Its totient is φ = 59996160.

The previous prime is 216040483. The next prime is 216040493. The reversal of 216040488 is 884040612.

It is an interprime number because it is at equal distance from previous prime (216040483) and next prime (216040493).

It is not an unprimeable number, because it can be changed into a prime (216040483) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6969033 + ... + 6969063.

It is an arithmetic number, because the mean of its divisors is an integer number (3351375).

Almost surely, 2216040488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216040488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321732000).

216040488 is an abundant number, since it is smaller than the sum of its proper divisors (427423512).

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

216040488 is a wasteful number, since it uses less digits than its factorization.

216040488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 216040488 is about 14698.3158218893. The cubic root of 216040488 is about 600.0374865468.

The spelling of 216040488 in words is "two hundred sixteen million, forty thousand, four hundred eighty-eight".