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30407372 = 2219537549
BaseRepresentation
bin111001111111…
…1101011001100
32010012212001222
41303333223030
530241013442
63003422512
7516313142
oct163775314
963185058
1030407372
1116189566
12a224a38
1363b8538
144077592
152a098d2
hex1cffacc

30407372 has 24 divisors (see below), whose sum is σ = 57078000. Its totient is φ = 14129856.

The previous prime is 30407369. The next prime is 30407387. The reversal of 30407372 is 27370403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (2378250).

Almost surely, 230407372 is an apocalyptic number.

It is an amenable number.

30407372 is a deficient number, since it is larger than the sum of its proper divisors (26670628).

30407372 is a wasteful number, since it uses less digits than its factorization.

30407372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625 (or 7623 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 30407372 is about 5514.2879866761. The cubic root of 30407372 is about 312.1233760364.

Adding to 30407372 its reverse (27370403), we get a palindrome (57777775).

The spelling of 30407372 in words is "thirty million, four hundred seven thousand, three hundred seventy-two".

Divisors: 1 2 4 19 38 53 76 106 212 1007 2014 4028 7549 15098 30196 143431 286862 400097 573724 800194 1600388 7601843 15203686 30407372