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30541254240 = 2535741475389
BaseRepresentation
bin11100011100011001…
…101000111001100000
32220211110202110121110
4130130121220321200
51000022030113430
622010325023320
72130561243360
oct343431507140
986743673543
1030541254240
1111a52818392
125b04254b40
132b59562893
14169a29c9a0
15bdb3e07b0
hex71c668e60

30541254240 has 768 divisors, whose sum is σ = 118513704960. Its totient is φ = 6466437120.

The previous prime is 30541254221. The next prime is 30541254241. The reversal of 30541254240 is 4245214503.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30541254198 and 30541254207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30541254241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 343160116 + ... + 343160204.

It is an arithmetic number, because the mean of its divisors is an integer number (154314720).

Almost surely, 230541254240 is an apocalyptic number.

30541254240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30541254240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59256852480).

30541254240 is an abundant number, since it is smaller than the sum of its proper divisors (87972450720).

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

30541254240 is a wasteful number, since it uses less digits than its factorization.

30541254240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 30541254240 its reverse (4245214503), we get a palindrome (34786468743).

The spelling of 30541254240 in words is "thirty billion, five hundred forty-one million, two hundred fifty-four thousand, two hundred forty".