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30374480 = 245379681
BaseRepresentation
bin111001111011…
…1101001010000
32010011011221202
41303313221100
530233440410
63003010332
7516115223
oct163675120
963134852
1030374480
1116166884
12a2099a8
1363a6586
1440695ba
1529eeca5
hex1cf7a50

30374480 has 20 divisors (see below), whose sum is σ = 70620852. Its totient is φ = 12149760.

The previous prime is 30374479. The next prime is 30374489. The reversal of 30374480 is 8447303.

It can be written as a sum of positive squares in 2 ways, for example, as 23697424 + 6677056 = 4868^2 + 2584^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30374489) 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, 189761 + ... + 189920.

Almost surely, 230374480 is an apocalyptic number.

It is an amenable number.

30374480 is an abundant number, since it is smaller than the sum of its proper divisors (40246372).

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

30374480 is a wasteful number, since it uses less digits than its factorization.

30374480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379694 (or 379688 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 30374480 is about 5511.3047457022. The cubic root of 30374480 is about 312.0107929644.

The spelling of 30374480 in words is "thirty million, three hundred seventy-four thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 379681 759362 1518724 1898405 3037448 3796810 6074896 7593620 15187240 30374480