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30254772450 = 23527191257587
BaseRepresentation
bin11100001011010100…
…110011000011100010
32220002111200200110210
4130023110303003202
5443430210204300
621522052434550
72120512215450
oct341324630342
986074620423
1030254772450
1111916037381
125a44318a56
132b120b8b26
1416702079d0
15bc11a2050
hex70b5330e2

30254772450 has 192 divisors, whose sum is σ = 86682451968. Its totient is φ = 6840729600.

The previous prime is 30254772323. The next prime is 30254772451. The reversal of 30254772450 is 5427745203.

It is a junction number, because it is equal to n+sod(n) for n = 30254772399 and 30254772408.

It is not an unprimeable number, because it can be changed into a prime (30254772451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51541057 + ... + 51541643.

It is an arithmetic number, because the mean of its divisors is an integer number (451471104).

Almost surely, 230254772450 is an apocalyptic number.

30254772450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30254772450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43341225984).

30254772450 is an abundant number, since it is smaller than the sum of its proper divisors (56427679518).

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

30254772450 is a wasteful number, since it uses less digits than its factorization.

30254772450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 39.

The spelling of 30254772450 in words is "thirty billion, two hundred fifty-four million, seven hundred seventy-two thousand, four hundred fifty".