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30372892 = 2211690293
BaseRepresentation
bin111001111011…
…1010000011100
32010011002202221
41303313100130
530233413032
63002555124
7516110464
oct163672034
963132687
1030372892
1116165670
12a208aa4
1363a5934
144068ba4
1529ee597
hex1cf741c

30372892 has 12 divisors (see below), whose sum is σ = 57984696. Its totient is φ = 13805840.

The previous prime is 30372847. The next prime is 30372907. The reversal of 30372892 is 29827303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345103 + ... + 345190.

It is an arithmetic number, because the mean of its divisors is an integer number (4832058).

Almost surely, 230372892 is an apocalyptic number.

It is an amenable number.

30372892 is a deficient number, since it is larger than the sum of its proper divisors (27611804).

30372892 is a wasteful number, since it uses less digits than its factorization.

30372892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690308 (or 690306 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 30372892 is about 5511.1606763004. The cubic root of 30372892 is about 312.0053554855.

It can be divided in two parts, 3037 and 2892, that added together give a square (5929 = 772).

The spelling of 30372892 in words is "thirty million, three hundred seventy-two thousand, eight hundred ninety-two".

Divisors: 1 2 4 11 22 44 690293 1380586 2761172 7593223 15186446 30372892