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64480930 = 2531208003
BaseRepresentation
bin1111010111111…
…0011010100010
311111022222012121
43311332122202
5113001342210
610222014454
71412036023
oct365763242
9144288177
1064480930
1133441528
121971742a
13104886c7
1487c6c4a
1559da6da
hex3d7e6a2

64480930 has 16 divisors (see below), whose sum is σ = 119810304. Its totient is φ = 24960240.

The previous prime is 64480921. The next prime is 64480931. The reversal of 64480930 is 3908446.

It is not an unprimeable number, because it can be changed into a prime (64480931) 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, 103692 + ... + 104311.

It is an arithmetic number, because the mean of its divisors is an integer number (7488144).

Almost surely, 264480930 is an apocalyptic number.

64480930 is a deficient number, since it is larger than the sum of its proper divisors (55329374).

64480930 is a wasteful number, since it uses less digits than its factorization.

64480930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208041.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 64480930 is about 8030.0018679948. The cubic root of 64480930 is about 400.9994382282. Note that the first 3 decimals are identical.

The spelling of 64480930 in words is "sixty-four million, four hundred eighty thousand, nine hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 208003 416006 1040015 2080030 6448093 12896186 32240465 64480930