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1028950947 = 32196017257
BaseRepresentation
bin111101010101001…
…000101110100011
32122201011010100100
4331111020232203
54101402412242
6250033553443
734332636663
oct7525105643
92581133310
101028950947
114888a8092
12248715883
1313523581b
149a9261a3
15604ee54c
hex3d548ba3

1028950947 has 12 divisors (see below), whose sum is σ = 1564487080. Its totient is φ = 649863648.

The previous prime is 1028950921. The next prime is 1028950963. The reversal of 1028950947 is 7490598201.

It is not a de Polignac number, because 1028950947 - 214 = 1028934563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028950997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3008458 + ... + 3008799.

Almost surely, 21028950947 is an apocalyptic number.

1028950947 is a deficient number, since it is larger than the sum of its proper divisors (535536133).

1028950947 is a wasteful number, since it uses less digits than its factorization.

1028950947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017282 (or 6017279 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1028950947 is about 32077.2652668522. The cubic root of 1028950947 is about 1009.5586566319.

The spelling of 1028950947 in words is "one billion, twenty-eight million, nine hundred fifty thousand, nine hundred forty-seven".

Divisors: 1 3 9 19 57 171 6017257 18051771 54155313 114327883 342983649 1028950947