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30450054 = 237171479
BaseRepresentation
bin111010000101…
…0000110000110
32010022000121210
41310022012012
530243400204
63004352250
7516551445
oct164120606
963260553
1030450054
1116208638
12a245686
136401aab
144088d5c
152a17389
hex1d0a186

30450054 has 16 divisors (see below), whose sum is σ = 61758720. Its totient is φ = 10006920.

The previous prime is 30450053. The next prime is 30450061. The reversal of 30450054 is 45005403.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30450054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30450053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35314 + ... + 36165.

It is an arithmetic number, because the mean of its divisors is an integer number (3859920).

Almost surely, 230450054 is an apocalyptic number.

30450054 is an abundant number, since it is smaller than the sum of its proper divisors (31308666).

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

30450054 is a wasteful number, since it uses less digits than its factorization.

30450054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71555.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 30450054 is about 5518.1567574689. The cubic root of 30450054 is about 312.2693474533.

Adding to 30450054 its reverse (45005403), we get a palindrome (75455457).

The spelling of 30450054 in words is "thirty million, four hundred fifty thousand, fifty-four".

Divisors: 1 2 3 6 71 142 213 426 71479 142958 214437 428874 5075009 10150018 15225027 30450054