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30912490970 = 253091249097
BaseRepresentation
bin11100110010100001…
…110010110111011010
32221210100022020122222
4130302201302313122
51001302044202340
622111225544042
72143016560244
oct346241626732
987710266588
1030912490970
1112123327aa9
125ba8645022
132bb844309a
1416d36d7094
15c0dcc18b5
hex732872dda

30912490970 has 8 divisors (see below), whose sum is σ = 55642483764. Its totient is φ = 12364996384.

The previous prime is 30912490969. The next prime is 30912490997. The reversal of 30912490970 is 7909421903.

It can be written as a sum of positive squares in 2 ways, for example, as 30740959561 + 171531409 = 175331^2 + 13097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545624539 + ... + 1545624558.

Almost surely, 230912490970 is an apocalyptic number.

30912490970 is a deficient number, since it is larger than the sum of its proper divisors (24729992794).

30912490970 is a wasteful number, since it uses less digits than its factorization.

30912490970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091249104.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 30912490970 in words is "thirty billion, nine hundred twelve million, four hundred ninety thousand, nine hundred seventy".

Divisors: 1 2 5 10 3091249097 6182498194 15456245485 30912490970