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30451412 = 2226172909
BaseRepresentation
bin111010000101…
…0011011010100
32010022002111002
41310022123110
530243421122
63004402432
7516555425
oct164123324
963262432
1030451412
1116209662
12a246418
1364025b4
14408964c
152a17992
hex1d0a6d4

30451412 has 12 divisors (see below), whose sum is σ = 53328660. Its totient is φ = 15214656.

The previous prime is 30451411. The next prime is 30451423. The reversal of 30451412 is 21415403.

It can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 2085136 = 5326^2 + 1444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30451411) 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, 9014 + ... + 11922.

It is an arithmetic number, because the mean of its divisors is an integer number (4444055).

Almost surely, 230451412 is an apocalyptic number.

It is an amenable number.

30451412 is a deficient number, since it is larger than the sum of its proper divisors (22877248).

30451412 is a wasteful number, since it uses less digits than its factorization.

30451412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530 (or 5528 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30451412 is about 5518.2798044318. The cubic root of 30451412 is about 312.2739895411.

Adding to 30451412 its reverse (21415403), we get a palindrome (51866815).

The spelling of 30451412 in words is "thirty million, four hundred fifty-one thousand, four hundred twelve".

Divisors: 1 2 4 2617 2909 5234 5818 10468 11636 7612853 15225706 30451412